diff --git a/build.gradle b/build.gradle
index 14218e4a..a5163fd0 100644
--- a/build.gradle
+++ b/build.gradle
@@ -28,7 +28,7 @@ ext {
     date = git.head().date.format("yy.MM.dd")
     revision = "-${git.head().abbreviatedId}"
     parents = git.head().parentIds;
-    index = -94;  // Offset to mach CI
+    index = -95;  // Offset to mach CI
     int major, minor, patch;
     major = minor = patch = 0;
     for (;parents != null && !parents.isEmpty();index++) {
diff --git a/bukkit/src/main/java/com/boydti/fawe/bukkit/BukkitMain.java b/bukkit/src/main/java/com/boydti/fawe/bukkit/BukkitMain.java
index b5b9283f..5f99c2e7 100644
--- a/bukkit/src/main/java/com/boydti/fawe/bukkit/BukkitMain.java
+++ b/bukkit/src/main/java/com/boydti/fawe/bukkit/BukkitMain.java
@@ -6,10 +6,12 @@ import com.boydti.fawe.bukkit.v0.BukkitQueue_All;
 import com.boydti.fawe.bukkit.v1_10.BukkitQueue_1_10;
 import com.boydti.fawe.bukkit.v1_11.BukkitQueue_1_11;
 import com.boydti.fawe.bukkit.v1_12.BukkitQueue_1_12;
+import com.boydti.fawe.bukkit.v1_12.NMSRegistryDumper;
 import com.boydti.fawe.bukkit.v1_7.BukkitQueue17;
 import com.boydti.fawe.bukkit.v1_8.BukkitQueue18R3;
 import com.boydti.fawe.bukkit.v1_9.BukkitQueue_1_9_R1;
 import com.boydti.fawe.object.FaweQueue;
+import com.boydti.fawe.util.MainUtil;
 import com.sk89q.worldedit.world.World;
 import java.lang.reflect.Field;
 import java.util.ArrayList;
@@ -66,6 +68,15 @@ public class BukkitMain extends JavaPlugin {
             try {
                 BukkitQueue_0.checkVersion(v.name());
                 this.version = v;
+                if (version == Version.v1_12_R1) {
+                    try {
+                        Fawe.debug("Running 1.12 registry dumper!");
+                        NMSRegistryDumper dumper = new NMSRegistryDumper(MainUtil.getFile(getDataFolder(), "extrablocks.json"));
+                        dumper.run();
+                    } catch (Throwable e) {
+                        e.printStackTrace();
+                    }
+                }
                 break;
             } catch (IllegalStateException e) {}
         }
diff --git a/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_12/NMSRegistryDumper.java b/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_12/NMSRegistryDumper.java
new file mode 100644
index 00000000..b5734c66
--- /dev/null
+++ b/bukkit/src/main/java/com/boydti/fawe/bukkit/v1_12/NMSRegistryDumper.java
@@ -0,0 +1,317 @@
+package com.boydti.fawe.bukkit.v1_12;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.TypeAdapter;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.lang.reflect.Field;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.LinkedHashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import net.minecraft.server.v1_12_R1.BaseBlockPosition;
+import net.minecraft.server.v1_12_R1.Block;
+import net.minecraft.server.v1_12_R1.BlockStateDirection;
+import net.minecraft.server.v1_12_R1.BlockStateList;
+import net.minecraft.server.v1_12_R1.EnumDirection;
+import net.minecraft.server.v1_12_R1.EnumPistonReaction;
+import net.minecraft.server.v1_12_R1.IBlockData;
+import net.minecraft.server.v1_12_R1.IBlockState;
+import net.minecraft.server.v1_12_R1.Material;
+import net.minecraft.server.v1_12_R1.MinecraftKey;
+import net.minecraft.server.v1_12_R1.Vec3D;
+
+@SuppressWarnings({"rawtypes", "unchecked"})
+public class NMSRegistryDumper {
+
+    private final Field fieldDirection;
+    private File file;
+    private Gson gson;
+
+    public NMSRegistryDumper(File file) throws NoSuchFieldException {
+        this.file = file;
+        GsonBuilder builder = new GsonBuilder().setPrettyPrinting();
+        builder.registerTypeAdapter(BaseBlockPosition.class, new BaseBlockPositionAdapter());
+        builder.registerTypeAdapter(Vec3D.class, new Vec3DAdapter());
+        this.gson = builder.create();
+        this.fieldDirection = EnumDirection.class.getDeclaredField("m");
+        this.fieldDirection.setAccessible(true);
+    }
+
+    public void run() throws Exception {
+        List<Map<String, Object>> list = new LinkedList<Map<String, Object>>();
+        for (Block block : Block.REGISTRY) {
+            MinecraftKey key = Block.REGISTRY.b(block);
+            list.add(getProperties(block, key));
+        }
+        Collections.sort(list, new MapComparator());
+        String out = gson.toJson(list);
+        this.write(out);
+    }
+
+    private Map<String, Object> getProperties(Block b, MinecraftKey key) throws IllegalAccessException {
+        Map<String, Object> map = new LinkedHashMap<String, Object>();
+        map.put("legacyId", Block.getId(b));
+        map.put("id", key.toString());
+        map.put("unlocalizedName", b.a());
+        map.put("localizedName", b.getName());
+        map.put("states", getStates(b));
+        map.put("material", getMaterial(b));
+        return map;
+    }
+
+    private Map<String, Map> getStates(Block b) throws IllegalAccessException {
+        Map<String, Map> map = new LinkedHashMap<String, Map>();
+        BlockStateList bs = b.s();
+        Collection<IBlockState<?>> props = bs.d();
+        for (IBlockState prop : props) {
+            map.put(prop.a(), dataValues(b, prop));
+        }
+
+        return map;
+    }
+
+    private final Vec3D[] rotations = {
+            new Vec3D(0, 0, -1),
+            new Vec3D(0.5, 0, -1),
+            new Vec3D(1, 0, -1),
+            new Vec3D(1, 0, -0.5),
+            new Vec3D(1, 0, 0),
+            new Vec3D(1, 0, 0.5),
+            new Vec3D(1, 0, 1),
+            new Vec3D(0.5, 0, 1),
+            new Vec3D(0, 0, 1),
+            new Vec3D(-0.5, 0, 1),
+            new Vec3D(-1, 0, 1),
+            new Vec3D(-1, 0, 0.5),
+            new Vec3D(-1, 0, 0),
+            new Vec3D(-1, 0, -0.5),
+            new Vec3D(-1, 0, -1),
+            new Vec3D(-0.5, 0, -1)
+    };
+
+
+    private BaseBlockPosition addDirection(Object orig, BaseBlockPosition addend) {
+        if (orig instanceof BaseBlockPosition) {
+            BaseBlockPosition ov = ((BaseBlockPosition) orig);
+            return new BaseBlockPosition(addend.getX() + ov.getX(), addend.getY() + ov.getY(), addend.getZ() + ov.getZ());
+        }
+        return addend;
+    }
+
+    private Map<String, Object> dataValues(Block b, IBlockState prop) throws IllegalAccessException {
+        //BlockState bs = b.getBlockState();
+        IBlockData base = b.fromLegacyData(0);
+
+        Map<String, Object> dataMap = new LinkedHashMap<String, Object>();
+        Map<String, Object> valueMap = new LinkedHashMap<String, Object>();
+        List<Integer> dvs = new ArrayList<Integer>();
+        for (Comparable val : (Iterable<Comparable>) prop.c()) {
+            Map<String, Object> stateMap = new LinkedHashMap<String, Object>();
+            int dv = b.toLegacyData(base.set(prop, val));
+            stateMap.put("data", dv);
+
+            Map<String, Object> addAfter = null;
+            String addAfterName = null;
+
+            dvs.add(dv);
+
+            if (prop instanceof BlockStateDirection) {
+                EnumDirection dir = EnumDirection.valueOf(val.toString().toUpperCase());
+                BaseBlockPosition vec = (BaseBlockPosition) fieldDirection.get(dir);
+                stateMap.put("direction", addDirection(stateMap.get("direction"), vec));
+            } else if (prop.a().equals("half")) {
+                if (prop.a(val).equals("top")) {
+                    stateMap.put("direction", addDirection(stateMap.get("direction"), new BaseBlockPosition(0, 1, 0)));
+                } else if (prop.a(val).equals("bottom")) {
+                    stateMap.put("direction", addDirection(stateMap.get("direction"), new BaseBlockPosition(0, -1, 0)));
+                }
+            } else if (prop.a().equals("axis")) {
+                if (prop.a(val).equals("x")) {
+                    stateMap.put("direction", new BaseBlockPosition(1, 0, 0));
+                    addAfter = new LinkedHashMap<String, Object>();
+                    addAfter.put("data", dv);
+                    addAfter.put("direction", new BaseBlockPosition(-1, 0, 0));
+                    addAfterName = "-x";
+                } else if (prop.a(val).equals("y")) {
+                    stateMap.put("direction", new BaseBlockPosition(0, 1, 0));
+                    addAfter = new LinkedHashMap<String, Object>();
+                    addAfter.put("data", dv);
+                    addAfter.put("direction", new BaseBlockPosition(0, -1, 0));
+                    addAfterName = "-y";
+                } else if (prop.a(val).equals("z")) {
+                    stateMap.put("direction", new BaseBlockPosition(0, 0, 1));
+                    addAfter = new LinkedHashMap<String, Object>();
+                    addAfter.put("data", dv);
+                    addAfter.put("direction", new BaseBlockPosition(0, 0, -1));
+                    addAfterName = "-z";
+                }
+            } else if (prop.a().equals("rotation")) {
+                stateMap.put("direction", rotations[Integer.valueOf(prop.a(val))]);
+            } else if (prop.a().equals("facing")) { // usually already instanceof PropertyDirection, unless it's a lever
+                if (prop.a(val).equals("south")) {
+                    stateMap.put("direction", new BaseBlockPosition(0, 0, 1));
+                } else if (prop.a(val).equals("north")) {
+                    stateMap.put("direction", new BaseBlockPosition(0, 0, -1));
+                } else if (prop.a(val).equals("west")) {
+                    stateMap.put("direction", new BaseBlockPosition(-1, 0, 0));
+                } else if (prop.a(val).equals("east")) {
+                    stateMap.put("direction", new BaseBlockPosition(1, 0, 0));
+                }
+                /*
+                // TODO fix these levers. they disappear right now
+                // excluding them just means they won't get rotated
+                } else if (prop.getName(val).equals("up_x")) {
+                    stateMap.put("direction", new BaseBlockPosition(1, 1, 0));
+                    addAfter = new LinkedHashMap<String, Object>();
+                    addAfter.put("data", dv);
+                    addAfter.put("direction", new BaseBlockPosition(-1, 1, 0));
+                    addAfterName = "up_-x";
+                } else if (prop.getName(val).equals("up_z")) {
+                    stateMap.put("direction", new BaseBlockPosition(0, 1, 1));
+                    addAfter = new LinkedHashMap<String, Object>();
+                    addAfter.put("data", dv);
+                    addAfter.put("direction", new BaseBlockPosition(0, 1, -1));
+                    addAfterName = "up_-z";
+                } else if (prop.getName(val).equals("down_x")) {
+                    stateMap.put("direction", new BaseBlockPosition(1, -1, 0));
+                    addAfter = new LinkedHashMap<String, Object>();
+                    addAfter.put("data", dv);
+                    addAfter.put("direction", new BaseBlockPosition(-1, -1, 0));
+                    addAfterName = "down_-x";
+                } else if (prop.getName(val).equals("down_z")) {
+                    stateMap.put("direction", new BaseBlockPosition(0, -1, 1));
+                    addAfter = new LinkedHashMap<String, Object>();
+                    addAfter.put("data", dv);
+                    addAfter.put("direction", new BaseBlockPosition(0, -1, -1));
+                    addAfterName = "down_-z";
+                }*/
+            }
+            valueMap.put(prop.a(val), stateMap);
+            if (addAfter != null) {
+                valueMap.put(addAfterName, addAfter);
+            }
+        }
+
+        // attempt to calc mask
+        int dataMask = 0;
+        for (int dv : dvs) {
+            dataMask |= dv;
+        }
+        dataMap.put("dataMask", dataMask);
+
+        dataMap.put("values", valueMap);
+        return dataMap;
+    }
+
+    private Map<String, Object> getMaterial(Block b) {
+        IBlockData bs = b.getBlockData();
+        Map<String, Object> map = new LinkedHashMap<String, Object>();
+        map.put("powerSource", b.isPowerSource(bs));
+        map.put("lightOpacity", b.m(bs));
+        map.put("lightValue", b.o(bs));
+        map.put("usingNeighborLight", b.p(bs));
+        map.put("hardness", getField(b, Block.class, "blockHardness", "strength"));
+        map.put("resistance", getField(b, Block.class, "blockResistance", "durability"));
+        map.put("ticksRandomly", b.isTicking());
+        map.put("fullCube", b.c(bs));
+        map.put("slipperiness", b.frictionFactor);
+        map.put("renderedAsNormalBlock", b.l(bs));
+        //map.put("solidFullCube", b.isSolidFullCube());
+        Material m = b.q(bs);
+        map.put("liquid", m.isLiquid());
+        map.put("solid", m.isBuildable());
+        map.put("movementBlocker", m.isSolid());
+        //map.put("blocksLight", m.blocksLight());
+        map.put("burnable", m.isBurnable());
+        map.put("opaque", m.k());
+        map.put("replacedDuringPlacement", m.isReplaceable());
+        map.put("toolRequired", !m.isAlwaysDestroyable());
+        map.put("fragileWhenPushed", m.getPushReaction() == EnumPistonReaction.DESTROY);
+        map.put("unpushable", m.getPushReaction() == EnumPistonReaction.BLOCK);
+        map.put("adventureModeExempt", getField(m, Material.class, "isAdventureModeExempt", "Q"));
+        //map.put("mapColor", rgb(m.getMaterialMapColor().colorValue));
+        map.put("ambientOcclusionLightValue", b.s(bs) ? 0.2F:1.0F);
+        map.put("grassBlocking", false); // idk what this property was originally supposed to be...grass uses a combination of light values to check growth
+        return map;
+    }
+
+    private Object getField(Object obj, Class<?> clazz, String name, String obfName) {
+        try {
+            Field f;
+            try {
+                f = clazz.getDeclaredField(name);
+            } catch (NoSuchFieldException ignored) {
+                f = clazz.getDeclaredField(obfName);
+            }
+            if (f == null) return null;
+            f.setAccessible(true);
+            return f.get(obj);
+        } catch (IllegalAccessException ignored) {
+        } catch (NoSuchFieldException ignored) {
+        }
+        return null;
+    }
+
+    private String rgb(int i) {
+        int r = (i >> 16) & 0xFF;
+        int g = (i >>  8) & 0xFF;
+        int b = i & 0xFF;
+        return String.format("#%02x%02x%02x", r, g, b);
+    }
+
+    private void write(String s) {
+        try {
+            FileOutputStream str = new FileOutputStream(file);
+            str.write(s.getBytes());
+        } catch (IOException e) {
+            System.err.printf("Error writing registry dump: %e", e);
+        }
+    }
+
+
+    public static class BaseBlockPositionAdapter extends TypeAdapter<BaseBlockPosition> {
+        @Override
+        public BaseBlockPosition read(final JsonReader in) throws IOException {
+            throw new UnsupportedOperationException();
+        }
+        @Override
+        public void write(final JsonWriter out, final BaseBlockPosition vec) throws IOException {
+            out.beginArray();
+            out.value(vec.getX());
+            out.value(vec.getY());
+            out.value(vec.getZ());
+            out.endArray();
+        }
+    }
+
+    public static class Vec3DAdapter extends TypeAdapter<Vec3D> {
+        @Override
+        public Vec3D read(final JsonReader in) throws IOException {
+            throw new UnsupportedOperationException();
+        }
+        @Override
+        public void write(final JsonWriter out, final Vec3D vec) throws IOException {
+            out.beginArray();
+            out.value(vec.x);
+            out.value(vec.y);
+            out.value(vec.z);
+            out.endArray();
+        }
+    }
+
+    private static class MapComparator implements Comparator<Map<String, Object>> {
+        @Override
+        public int compare(Map<String, Object> a, Map<String, Object> b) {
+            return ((Integer) a.get("legacyId")).compareTo((Integer) b.get("legacyId"));
+        }
+    }
+}
\ No newline at end of file
diff --git a/core/src/main/java/com/boydti/fawe/Fawe.java b/core/src/main/java/com/boydti/fawe/Fawe.java
index bb684dd5..cdd5d1ac 100644
--- a/core/src/main/java/com/boydti/fawe/Fawe.java
+++ b/core/src/main/java/com/boydti/fawe/Fawe.java
@@ -32,13 +32,14 @@ import com.sk89q.worldedit.blocks.BaseBlock;
 import com.sk89q.worldedit.blocks.BlockData;
 import com.sk89q.worldedit.command.BiomeCommands;
 import com.sk89q.worldedit.command.BrushCommands;
+import com.sk89q.worldedit.command.BrushOptionsCommands;
 import com.sk89q.worldedit.command.ChunkCommands;
 import com.sk89q.worldedit.command.ClipboardCommands;
 import com.sk89q.worldedit.command.FlattenedClipboardTransform;
-import com.sk89q.worldedit.command.OptionsCommands;
 import com.sk89q.worldedit.command.GenerationCommands;
 import com.sk89q.worldedit.command.HistoryCommands;
 import com.sk89q.worldedit.command.NavigationCommands;
+import com.sk89q.worldedit.command.OptionsCommands;
 import com.sk89q.worldedit.command.RegionCommands;
 import com.sk89q.worldedit.command.SchematicCommands;
 import com.sk89q.worldedit.command.ScriptingCommands;
@@ -46,7 +47,6 @@ import com.sk89q.worldedit.command.SnapshotCommands;
 import com.sk89q.worldedit.command.SnapshotUtilCommands;
 import com.sk89q.worldedit.command.SuperPickaxeCommands;
 import com.sk89q.worldedit.command.ToolCommands;
-import com.sk89q.worldedit.command.BrushOptionsCommands;
 import com.sk89q.worldedit.command.UtilityCommands;
 import com.sk89q.worldedit.command.WorldEditCommands;
 import com.sk89q.worldedit.command.composition.SelectionCommand;
@@ -106,6 +106,9 @@ import com.sk89q.worldedit.function.visitor.RegionVisitor;
 import com.sk89q.worldedit.history.change.EntityCreate;
 import com.sk89q.worldedit.history.change.EntityRemove;
 import com.sk89q.worldedit.internal.LocalWorldAdapter;
+import com.sk89q.worldedit.internal.expression.Expression;
+import com.sk89q.worldedit.internal.expression.runtime.ExpressionEnvironment;
+import com.sk89q.worldedit.internal.expression.runtime.Functions;
 import com.sk89q.worldedit.math.convolution.HeightMap;
 import com.sk89q.worldedit.math.interpolation.KochanekBartelsInterpolation;
 import com.sk89q.worldedit.math.transform.AffineTransform;
@@ -113,6 +116,7 @@ import com.sk89q.worldedit.regions.CuboidRegion;
 import com.sk89q.worldedit.regions.EllipsoidRegion;
 import com.sk89q.worldedit.regions.selector.CuboidRegionSelector;
 import com.sk89q.worldedit.regions.shape.ArbitraryShape;
+import com.sk89q.worldedit.regions.shape.WorldEditExpressionEnvironment;
 import com.sk89q.worldedit.session.ClipboardHolder;
 import com.sk89q.worldedit.session.PasteBuilder;
 import com.sk89q.worldedit.session.SessionManager;
@@ -128,6 +132,7 @@ import com.sk89q.worldedit.util.formatting.component.CommandUsageBox;
 import com.sk89q.worldedit.util.formatting.component.MessageBox;
 import com.sk89q.worldedit.world.registry.BundledBlockData;
 import java.io.File;
+import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
 import java.lang.management.ManagementFactory;
@@ -340,8 +345,10 @@ public class Fawe {
 
     public TextureUtil getCachedTextureUtil(boolean randomize, int min, int max) {
         TextureUtil tu = getTextureUtil();
-        tu = min == 0 && max == 100 ? tu : new CleanTextureUtil(tu, min, max);
-        tu = randomize ? new RandomTextureUtil(tu) : new CachedTextureUtil(tu);
+        try {
+            tu = min == 0 && max == 100 ? tu : new CleanTextureUtil(tu, min, max);
+            tu = randomize ? new RandomTextureUtil(tu) : new CachedTextureUtil(tu);
+        } catch (FileNotFoundException neverHappens) { neverHappens.printStackTrace(); }
         return tu;
     }
 
@@ -355,7 +362,7 @@ public class Fawe {
                         textures = tmp = new TextureUtil();
                         tmp.loadModTextures();
                     } catch (IOException e) {
-                        e.printStackTrace();
+                        throw new RuntimeException(e);
                     }
                 }
             }
@@ -545,6 +552,11 @@ public class Fawe {
             BlockReplace.inject(); // Optimizations + Features
             ForwardExtentCopy.inject(); // Fixes + optimizations
             ChangeSetExecutor.inject(); // Optimizations
+            // Expression
+            ExpressionEnvironment.inject(); // Optimizations + features
+            WorldEditExpressionEnvironment.inject(); // Optimizations + features
+            Expression.inject(); // Optimizations
+            Functions.inject(); // Optimizations
             // BlockData
             BlockData.inject(); // Temporary fix for 1.9.4
             BundledBlockData.inject(); // Add custom rotation
diff --git a/core/src/main/java/com/boydti/fawe/config/BBC.java b/core/src/main/java/com/boydti/fawe/config/BBC.java
index 515fe3b6..5c6abd4f 100644
--- a/core/src/main/java/com/boydti/fawe/config/BBC.java
+++ b/core/src/main/java/com/boydti/fawe/config/BBC.java
@@ -201,6 +201,7 @@ public enum BBC {
 
     COMMAND_INVALID_SYNTAX("The command was not used properly (no more help available).", "WorldEdit.Command"),
 
+    COMMAND_CLARIFYING_BRACKET("&7Added clarifying bracket for &c%s0", "WorldEdit.Help"),
     HELP_SUGGEST("&7Couldn't find %s0. Maybe try one of &c%s1 &7?", "WorldEdit.Help"),
     HELP_HEADER_CATEGORIES("Command Types", "WorldEdit.Help"),
     HELP_HEADER_SUBCOMMANDS("Subcommands", "WorldEdit.Help"),
diff --git a/core/src/main/java/com/boydti/fawe/jnbt/anvil/HeightMapMCAGenerator.java b/core/src/main/java/com/boydti/fawe/jnbt/anvil/HeightMapMCAGenerator.java
index e1c3842f..209f8123 100644
--- a/core/src/main/java/com/boydti/fawe/jnbt/anvil/HeightMapMCAGenerator.java
+++ b/core/src/main/java/com/boydti/fawe/jnbt/anvil/HeightMapMCAGenerator.java
@@ -31,6 +31,7 @@ import com.sk89q.worldedit.world.registry.WorldData;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
 import java.awt.image.BufferedImage;
 import java.io.File;
+import java.io.FileNotFoundException;
 import java.util.Arrays;
 
 public class HeightMapMCAGenerator extends MCAWriter implements Extent {
@@ -79,11 +80,13 @@ public class HeightMapMCAGenerator extends MCAWriter implements Extent {
         if (textureUtil == null) {
             textureUtil = Fawe.get().getTextureUtil();
         }
-        if (randomVariation) {
-            return new RandomTextureUtil(textureUtil);
-        } else {
-            return new CachedTextureUtil(textureUtil);
-        }
+        try {
+            if (randomVariation) {
+                return new RandomTextureUtil(textureUtil);
+            } else {
+                return new CachedTextureUtil(textureUtil);
+            }
+        } catch (FileNotFoundException neverHappens) { neverHappens.printStackTrace(); return null; }
     }
 
     public void setWaterHeight(int waterHeight) {
diff --git a/core/src/main/java/com/boydti/fawe/object/brush/BrushSettings.java b/core/src/main/java/com/boydti/fawe/object/brush/BrushSettings.java
index b7b3c9c9..1ff831f9 100644
--- a/core/src/main/java/com/boydti/fawe/object/brush/BrushSettings.java
+++ b/core/src/main/java/com/boydti/fawe/object/brush/BrushSettings.java
@@ -137,6 +137,11 @@ public class BrushSettings {
         return this;
     }
 
+    public BrushSettings clearPerms() {
+        permissions.clear();
+        return this;
+    }
+
     public BrushSettings addSetting(SettingType type, String args) {
         constructor.put(type, args);
         return this;
diff --git a/core/src/main/java/com/boydti/fawe/object/collection/PrimitiveList.java b/core/src/main/java/com/boydti/fawe/object/collection/PrimitiveList.java
new file mode 100644
index 00000000..00f6309e
--- /dev/null
+++ b/core/src/main/java/com/boydti/fawe/object/collection/PrimitiveList.java
@@ -0,0 +1,315 @@
+package com.boydti.fawe.object.collection;
+
+import java.lang.reflect.Array;
+import java.util.AbstractList;
+
+public class PrimitiveList<T> extends AbstractList<T> {
+    private final Class<?> primitive;
+    private final Type type;
+    private int length;
+    private int totalLength;
+    private Object arr;
+
+    private enum Type {
+        Byte,
+        Boolean,
+        Short,
+        Character,
+        Integer,
+        Float,
+        Long,
+        Double
+    }
+
+    public PrimitiveList(Class<T> type) {
+        try {
+            Class<T> boxed;
+            if (type.isPrimitive()) {
+                this.primitive = type;
+                boxed = (Class<T>) Array.get(Array.newInstance(primitive,1),0).getClass();
+            } else {
+                this.primitive = (Class<?>) type.getField("TYPE").get(null);
+                boxed = type;
+            }
+            this.type = Type.valueOf(boxed.getSimpleName());
+        } catch (Throwable e) {
+            throw new RuntimeException(e);
+        }
+        length = 0;
+        totalLength = 0;
+        arr = Array.newInstance(primitive, 0);
+    }
+
+    public PrimitiveList(T[] arr) {
+        try {
+            Class<T> boxed = (Class<T>) arr.getClass().getComponentType();
+            this.primitive = (Class<?>) boxed.getField("TYPE").get(null);
+            this.type = Type.valueOf(boxed.getSimpleName());
+        } catch (Throwable e) {
+            throw new RuntimeException(e);
+        }
+        this.arr = Array.newInstance(primitive, arr.length);
+        for (int i = 0; i < arr.length; i++) {
+            T val = arr[i];
+            if (val != null) setFast(i, val);
+        }
+        this.length = arr.length;
+        this.totalLength = length;
+    }
+
+    public PrimitiveList(Object arr) {
+        if (!arr.getClass().isArray()) {
+            throw new IllegalArgumentException("Argument must be an array!");
+        }
+        this.primitive = arr.getClass().getComponentType();
+        Class<T> boxed = (Class<T>) Array.get(Array.newInstance(primitive, 1), 0).getClass();
+        this.type = Type.valueOf(boxed.getSimpleName());
+        this.arr = arr;
+        this.length = Array.getLength(arr);
+        this.totalLength = length;
+    }
+
+    public Object getArray() {
+        return arr;
+    }
+
+    @Override
+    public T get(int index) {
+        return (T) getFast(index);
+    }
+
+    public byte getByte(int index) {
+        return type == Type.Double ? ((byte[]) arr)[index] : (byte) getFast(index);
+    }
+
+    public boolean getBoolean(int index) {
+        return type == Type.Boolean ? ((boolean[]) arr)[index] : (boolean) getFast(index);
+    }
+
+    public short getShort(int index) {
+        return type == Type.Short ? ((short[]) arr)[index] : (short) getFast(index);
+    }
+
+    public char getCharacter(int index) {
+        return type == Type.Character ? ((char[]) arr)[index] : (char) getFast(index);
+    }
+
+    public int getInt(int index) {
+        return type == Type.Integer ? ((int[]) arr)[index] : (int) getFast(index);
+    }
+
+    public float getFloat(int index) {
+        return type == Type.Float ? ((float[]) arr)[index] : (float) getFast(index);
+    }
+
+    public long getLong(int index) {
+        return type == Type.Long ? ((long[]) arr)[index] : (long) getFast(index);
+    }
+
+    public double getDouble(int index) {
+        return type == Type.Double ? ((double[]) arr)[index] : (double) getFast(index);
+    }
+
+    private final Object getFast(int index) {
+        switch (type) {
+            case Byte:
+                return ((byte[]) arr)[index];
+            case Boolean:
+                return ((boolean[]) arr)[index];
+            case Short:
+                return ((short[]) arr)[index];
+            case Character:
+                return ((char[]) arr)[index];
+            case Integer:
+                return ((int[]) arr)[index];
+            case Float:
+                return ((float[]) arr)[index];
+            case Long:
+                return ((long[]) arr)[index];
+            case Double:
+                return ((double[]) arr)[index];
+        }
+        return null;
+    }
+
+    @Override
+    public T set(int index, T element) {
+        T value = get(index);
+        setFast(index, element);
+        return value;
+    }
+
+    public void set(int index, char value) {
+        switch (type) {
+            default:
+                setFast(index, value);
+                return;
+            case Character:
+                ((char[]) arr)[index] = value;
+                return;
+        }
+    }
+
+    public void set(int index, byte value) {
+        switch (type) {
+            default:
+                setFast(index, value);
+                return;
+            case Byte:
+                ((byte[]) arr)[index] = value;
+                return;
+        }
+    }
+
+    public void set(int index, int value) {
+        switch (type) {
+            default:
+                setFast(index, value);
+                return;
+            case Integer:
+                ((int[]) arr)[index] = value;
+                return;
+            case Long:
+                ((long[]) arr)[index] = (long) value;
+                return;
+            case Double:
+                ((double[]) arr)[index] = (double) value;
+                return;
+        }
+    }
+
+    public void set(int index, double value) {
+        switch (type) {
+            default:
+                setFast(index, value);
+                return;
+            case Float:
+                ((float[]) arr)[index] = (float) value;
+                return;
+            case Long:
+                ((long[]) arr)[index] = (long) value;
+                return;
+            case Double:
+                ((double[]) arr)[index] = value;
+                return;
+        }
+    }
+
+    public final void setFast(int index, Object element) {
+        switch (type) {
+            case Byte:
+                ((byte[]) arr)[index] = (byte) element;
+                return;
+            case Boolean:
+                ((boolean[]) arr)[index] = (boolean) element;
+                return;
+            case Short:
+                ((short[]) arr)[index] = (short) element;
+                return;
+            case Character:
+                ((char[]) arr)[index] = (char) element;
+                return;
+            case Integer:
+                ((int[]) arr)[index] = (int) element;
+                return;
+            case Float:
+                ((float[]) arr)[index] = (float) element;
+                return;
+            case Long:
+                ((long[]) arr)[index] = (long) element;
+                return;
+            case Double:
+                ((double[]) arr)[index] = (double) element;
+                return;
+        }
+    }
+
+
+    @Override
+    public void add(int index, T element) {
+        if (index == length) {
+            if (totalLength == length) {
+                Object tmp = arr;
+                totalLength = (length << 1) + 16;
+                arr = Array.newInstance(primitive, totalLength);
+                System.arraycopy(tmp, 0, arr, 0, length);
+            }
+            setFast(length, element);
+            length++;
+        } else {
+            if (totalLength == length) {
+                Object tmp = arr;
+                totalLength = (length << 1) + 16;
+                arr = Array.newInstance(primitive, totalLength);
+                System.arraycopy(tmp, 0, arr, 0, index);
+            }
+            System.arraycopy(arr, index, arr, index + 1, length - index);
+            set(index, element);
+            length++;
+        }
+    }
+
+    private void ensureAddCapacity() {
+        if (totalLength == length) {
+            Object tmp = arr;
+            totalLength = (length << 1) + 16;
+            arr = Array.newInstance(primitive, totalLength);
+            System.arraycopy(tmp, 0, arr, 0, length);
+        }
+    }
+
+    @Override
+    public boolean add(T element) {
+        ensureAddCapacity();
+        setFast(length++, element);
+        return true;
+    }
+
+    public boolean add(int element) {
+        ensureAddCapacity();
+        set(length++, element);
+        return true;
+    }
+
+    public boolean add(double element) {
+        ensureAddCapacity();
+        set(length++, element);
+        return true;
+    }
+
+    public boolean add(byte element) {
+        ensureAddCapacity();
+        set(length++, element);
+        return true;
+    }
+
+    public boolean add(char element) {
+        ensureAddCapacity();
+        set(length++, element);
+        return true;
+    }
+
+    @Override
+    public T remove(int index) {
+        if (index < 0 || index > length) throw new IndexOutOfBoundsException(index + " not in [0, " + length + "]");
+        T value = get(index);
+        if (index != length) {
+            System.arraycopy(arr, index + 1, arr, index, length - index - 1);
+        }
+        length--;
+        return value;
+    }
+
+    @Override
+    public int size() {
+        return length;
+    }
+
+    @Override
+    public void clear() {
+        if (length != 0) {
+            this.arr = Array.newInstance(primitive, 0);
+        }
+        length = 0;
+    }
+}
diff --git a/core/src/main/java/com/boydti/fawe/object/pattern/ExpressionPattern.java b/core/src/main/java/com/boydti/fawe/object/pattern/ExpressionPattern.java
index a680c31f..640012f5 100644
--- a/core/src/main/java/com/boydti/fawe/object/pattern/ExpressionPattern.java
+++ b/core/src/main/java/com/boydti/fawe/object/pattern/ExpressionPattern.java
@@ -28,7 +28,7 @@ public class ExpressionPattern extends AbstractPattern {
     /**
      * Create a new instance.
      *
-     * @param expression the expression
+     * @param input the expression
      * @throws ExpressionException thrown if there is an error with the expression
      */
     public ExpressionPattern(String input) throws ExpressionException {
@@ -56,7 +56,11 @@ public class ExpressionPattern extends AbstractPattern {
             double combined = expression.evaluate(vector.getX(), vector.getY(), vector.getZ());
             return FaweCache.CACHE_BLOCK[(char) combined];
         } catch (EvaluationException e) {
+            e.printStackTrace();
             return EditSession.nullBlock;
+        } catch (Throwable e) {
+            e.printStackTrace();
+            throw e;
         }
     }
 
diff --git a/core/src/main/java/com/boydti/fawe/util/CachedTextureUtil.java b/core/src/main/java/com/boydti/fawe/util/CachedTextureUtil.java
index 36305c53..d40ace1b 100644
--- a/core/src/main/java/com/boydti/fawe/util/CachedTextureUtil.java
+++ b/core/src/main/java/com/boydti/fawe/util/CachedTextureUtil.java
@@ -3,6 +3,7 @@ package com.boydti.fawe.util;
 import com.boydti.fawe.FaweCache;
 import com.sk89q.worldedit.blocks.BaseBlock;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
+import java.io.FileNotFoundException;
 
 public class CachedTextureUtil extends DelegateTextureUtil {
     private final TextureUtil parent;
@@ -10,7 +11,7 @@ public class CachedTextureUtil extends DelegateTextureUtil {
     private transient Int2ObjectOpenHashMap<Integer> colorBiomeMap;
     private transient Int2ObjectOpenHashMap<char[]> colorLayerMap;
 
-    public CachedTextureUtil(TextureUtil parent) {
+    public CachedTextureUtil(TextureUtil parent) throws FileNotFoundException {
         super(parent);
         this.parent = parent;
         this.colorBlockMap = new Int2ObjectOpenHashMap<>();
diff --git a/core/src/main/java/com/boydti/fawe/util/CleanTextureUtil.java b/core/src/main/java/com/boydti/fawe/util/CleanTextureUtil.java
index 0ccf7d85..56990d00 100644
--- a/core/src/main/java/com/boydti/fawe/util/CleanTextureUtil.java
+++ b/core/src/main/java/com/boydti/fawe/util/CleanTextureUtil.java
@@ -1,9 +1,10 @@
 package com.boydti.fawe.util;
 
+import java.io.FileNotFoundException;
 import java.util.Arrays;
 
 public class CleanTextureUtil extends TextureUtil {
-    public CleanTextureUtil(TextureUtil parent, int minPercent, int maxPercent) {
+    public CleanTextureUtil(TextureUtil parent, int minPercent, int maxPercent) throws FileNotFoundException {
         super(parent.getFolder());
         int minIndex = ((parent.distances.length - 1) * minPercent) / 100;
         int maxIndex = ((parent.distances.length - 1) * maxPercent) / 100;
diff --git a/core/src/main/java/com/boydti/fawe/util/DelegateTextureUtil.java b/core/src/main/java/com/boydti/fawe/util/DelegateTextureUtil.java
index 19a8a2d6..b05effd9 100644
--- a/core/src/main/java/com/boydti/fawe/util/DelegateTextureUtil.java
+++ b/core/src/main/java/com/boydti/fawe/util/DelegateTextureUtil.java
@@ -3,12 +3,13 @@ package com.boydti.fawe.util;
 import com.sk89q.worldedit.blocks.BaseBlock;
 import java.awt.image.BufferedImage;
 import java.io.File;
+import java.io.FileNotFoundException;
 import java.io.IOException;
 
 public class DelegateTextureUtil extends TextureUtil {
     private final TextureUtil parent;
 
-    public DelegateTextureUtil(TextureUtil parent) {
+    public DelegateTextureUtil(TextureUtil parent) throws FileNotFoundException {
         super(parent.getFolder());
         this.parent = parent;
     }
diff --git a/core/src/main/java/com/boydti/fawe/util/FilteredTextureUtil.java b/core/src/main/java/com/boydti/fawe/util/FilteredTextureUtil.java
index 6883f71c..33879ec0 100644
--- a/core/src/main/java/com/boydti/fawe/util/FilteredTextureUtil.java
+++ b/core/src/main/java/com/boydti/fawe/util/FilteredTextureUtil.java
@@ -2,10 +2,11 @@ package com.boydti.fawe.util;
 
 import com.boydti.fawe.FaweCache;
 import com.sk89q.worldedit.blocks.BaseBlock;
+import java.io.FileNotFoundException;
 import java.util.Set;
 
 public class FilteredTextureUtil extends TextureUtil {
-    public FilteredTextureUtil(TextureUtil parent, Set<BaseBlock> blocks) {
+    public FilteredTextureUtil(TextureUtil parent, Set<BaseBlock> blocks) throws FileNotFoundException {
         super(parent.getFolder());
         this.validBiomes = parent.validBiomes;
         this.blockColors = parent.blockColors;
diff --git a/core/src/main/java/com/boydti/fawe/util/RandomTextureUtil.java b/core/src/main/java/com/boydti/fawe/util/RandomTextureUtil.java
index 2f7c53b1..c3ea0b73 100644
--- a/core/src/main/java/com/boydti/fawe/util/RandomTextureUtil.java
+++ b/core/src/main/java/com/boydti/fawe/util/RandomTextureUtil.java
@@ -5,12 +5,13 @@ import com.boydti.fawe.object.PseudoRandom;
 import com.sk89q.worldedit.blocks.BaseBlock;
 import com.sk89q.worldedit.blocks.BlockID;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
+import java.io.FileNotFoundException;
 
 public class RandomTextureUtil extends CachedTextureUtil {
 
     private final int grassColor;
 
-    public RandomTextureUtil(TextureUtil parent) {
+    public RandomTextureUtil(TextureUtil parent) throws FileNotFoundException {
         super(parent);
         this.grassColor = parent.getColor(FaweCache.getBlock(BlockID.GRASS, 0));
     }
diff --git a/core/src/main/java/com/boydti/fawe/util/TextureUtil.java b/core/src/main/java/com/boydti/fawe/util/TextureUtil.java
index 0cce6959..abf91259 100644
--- a/core/src/main/java/com/boydti/fawe/util/TextureUtil.java
+++ b/core/src/main/java/com/boydti/fawe/util/TextureUtil.java
@@ -13,6 +13,7 @@ import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
 import java.awt.image.BufferedImage;
 import java.io.File;
+import java.io.FileNotFoundException;
 import java.io.FilenameFilter;
 import java.io.IOException;
 import java.io.InputStream;
@@ -50,6 +51,7 @@ public class TextureUtil {
     protected int[] validLayerColors;
     protected char[][] validLayerBlocks;
 
+
     /**
      * https://github.com/erich666/Mineways/blob/master/Win/biomes.cpp
      */
@@ -315,12 +317,15 @@ public class TextureUtil {
             new BiomeColor(255, "Unknown Biome",				0.8f, 0.4f, 0x92BD59, 0x77AB2F ),
     };
 
-    public TextureUtil() {
+    public TextureUtil() throws FileNotFoundException {
         this(MainUtil.getFile(Fawe.imp().getDirectory(), Settings.IMP.PATHS.TEXTURES));
     }
 
-    public TextureUtil(File folder) {
+    public TextureUtil(File folder) throws FileNotFoundException {
         this.folder = folder;
+        if (!folder.exists()) {
+            throw new FileNotFoundException("Please create a `FastAsyncWorldEdit/textures` folder with `.minecraft/versions` jar or mods in it.");
+        }
     }
 
     public BaseBlock getNearestBlock(int color) {
@@ -808,6 +813,9 @@ public class TextureUtil {
         if (all == null) {
             all = (String) textures.get("top");
         }
+        if (all == null) {
+            all = (String) textures.get("pattern");
+        }
         if (all != null) {
             String textureName = getFileName(all);
             // Add the model
diff --git a/core/src/main/java/com/boydti/fawe/util/Updater.java b/core/src/main/java/com/boydti/fawe/util/Updater.java
index bedf1a9d..ae536a36 100644
--- a/core/src/main/java/com/boydti/fawe/util/Updater.java
+++ b/core/src/main/java/com/boydti/fawe/util/Updater.java
@@ -16,7 +16,7 @@ public class Updater {
 
     public String getChanges() {
         if (changes == null) {
-            try (Scanner scanner = new Scanner(new URL("http://boydti.com/fawe/cl?" + Integer.toHexString(Fawe.get().getVersion().hash)).openStream(), "UTF-8")) {
+            try (Scanner scanner = new Scanner(new URL("http://empcraft.com/fawe/cl?" + Integer.toHexString(Fawe.get().getVersion().hash)).openStream(), "UTF-8")) {
                 changes = scanner.useDelimiter("\\A").next();
             } catch (IOException e) {
                 e.printStackTrace();
@@ -60,7 +60,7 @@ public class Updater {
                             fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
                         }
                         Fawe.debug("Updated FAWE to " + versionString);
-                        MainUtil.sendAdmin("&7Restart to update FAWE with these changes: &c/fawe changelog &7or&c " + "http://boydti.com/fawe/cl?" + Integer.toHexString(currentVersion.hash));
+                        MainUtil.sendAdmin("&7Restart to update FAWE with these changes: &c/fawe changelog &7or&c " + "http://empcraft.com/fawe/cl?" + Integer.toHexString(currentVersion.hash));
                     }
                 }
             }
diff --git a/core/src/main/java/com/sk89q/worldedit/command/MaskCommands.java b/core/src/main/java/com/sk89q/worldedit/command/MaskCommands.java
index 3d64de46..e8588a3c 100644
--- a/core/src/main/java/com/sk89q/worldedit/command/MaskCommands.java
+++ b/core/src/main/java/com/sk89q/worldedit/command/MaskCommands.java
@@ -368,7 +368,7 @@ public class MaskCommands extends MethodCommands {
             max = 1
     )
     public Mask expression(EditSession editSession, String input) throws ExpressionException {
-        Expression exp = Expression.compile(input.substring(1), "x", "y", "z");
+        Expression exp = Expression.compile(input, "x", "y", "z");
         WorldEditExpressionEnvironment env = new WorldEditExpressionEnvironment(
                 editSession, Vector.ONE, Vector.ZERO);
         exp.setEnvironment(env);
diff --git a/core/src/main/java/com/sk89q/worldedit/command/WorldEditCommands.java b/core/src/main/java/com/sk89q/worldedit/command/WorldEditCommands.java
index e980f3f5..08e2c2dc 100644
--- a/core/src/main/java/com/sk89q/worldedit/command/WorldEditCommands.java
+++ b/core/src/main/java/com/sk89q/worldedit/command/WorldEditCommands.java
@@ -131,7 +131,7 @@ public class WorldEditCommands {
             Updater updater = Fawe.get().getUpdater();
             String changes = updater != null ? updater.getChanges() : null;
             if (changes == null) {
-                try (Scanner scanner = new Scanner(new URL("http://boydti.com/fawe/cl?" + Integer.toHexString(Fawe.get().getVersion().hash)).openStream(), "UTF-8")) {
+                try (Scanner scanner = new Scanner(new URL("http://empcraft.com/fawe/cl?" + Integer.toHexString(Fawe.get().getVersion().hash)).openStream(), "UTF-8")) {
                     changes = scanner.useDelimiter("\\A").next();
                 }
             }
diff --git a/core/src/main/java/com/sk89q/worldedit/command/tool/BrushTool.java b/core/src/main/java/com/sk89q/worldedit/command/tool/BrushTool.java
index 00983528..216fa2e3 100644
--- a/core/src/main/java/com/sk89q/worldedit/command/tool/BrushTool.java
+++ b/core/src/main/java/com/sk89q/worldedit/command/tool/BrushTool.java
@@ -264,7 +264,7 @@ public class BrushTool implements DoubleActionTraceTool, ScrollTool, MovableTool
     public void setBrush(Brush brush, String permission, Player player) {
         if (player != null) clear(player);
         BrushSettings current = getContext();
-        current.clear();
+        current.clearPerms();
         current.setBrush(brush);
         current.addPermission(permission);
     }
diff --git a/core/src/main/java/com/sk89q/worldedit/extension/factory/DefaultMaskParser.java b/core/src/main/java/com/sk89q/worldedit/extension/factory/DefaultMaskParser.java
index 7e1c6254..234039f7 100644
--- a/core/src/main/java/com/sk89q/worldedit/extension/factory/DefaultMaskParser.java
+++ b/core/src/main/java/com/sk89q/worldedit/extension/factory/DefaultMaskParser.java
@@ -1,6 +1,7 @@
 package com.sk89q.worldedit.extension.factory;
 
 import com.boydti.fawe.command.FaweParser;
+import com.boydti.fawe.config.BBC;
 import com.boydti.fawe.util.StringMan;
 import com.sk89q.minecraft.util.commands.CommandLocals;
 import com.sk89q.worldedit.WorldEdit;
@@ -103,7 +104,7 @@ public class DefaultMaskParser extends FaweParser<Mask> {
                                     input = input.substring(input.indexOf(char0) + 1);
                                     mask = parseFromInput(char0 + "[" + input + "]", context);
                                     if (actor != null) {
-                                        actor.print("&7Added clarifying bracket for: " + char0 + "&c[&7" + input + "&c]&7");
+                                        BBC.COMMAND_CLARIFYING_BRACKET.send(actor, char0 + "[" + input + "]");
                                     }
                                     return mask;
                             }
diff --git a/core/src/main/java/com/sk89q/worldedit/internal/expression/Expression.java b/core/src/main/java/com/sk89q/worldedit/internal/expression/Expression.java
new file mode 100644
index 00000000..3b1ec972
--- /dev/null
+++ b/core/src/main/java/com/sk89q/worldedit/internal/expression/Expression.java
@@ -0,0 +1,177 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.internal.expression;
+
+import com.sk89q.worldedit.internal.expression.lexer.Lexer;
+import com.sk89q.worldedit.internal.expression.lexer.tokens.Token;
+import com.sk89q.worldedit.internal.expression.parser.Parser;
+import com.sk89q.worldedit.internal.expression.runtime.Constant;
+import com.sk89q.worldedit.internal.expression.runtime.EvaluationException;
+import com.sk89q.worldedit.internal.expression.runtime.ExpressionEnvironment;
+import com.sk89q.worldedit.internal.expression.runtime.Functions;
+import com.sk89q.worldedit.internal.expression.runtime.RValue;
+import com.sk89q.worldedit.internal.expression.runtime.ReturnException;
+import com.sk89q.worldedit.internal.expression.runtime.Variable;
+import java.util.ArrayDeque;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Compiles and evaluates expressions.
+ *
+ * <p>Supported operators:</p>
+ *
+ * <ul>
+ *     <li>Logical: &&, ||, ! (unary)</li>
+ *     <li>Bitwise: ~ (unary), &gt;&gt;, &lt;&lt;</li>
+ *     <li>Arithmetic: +, -, *, /, % (modulo), ^ (power), - (unary), --, ++ (prefix only)</li>
+ *     <li>Comparison: &lt;=, &gt;=, &gt;, &lt;, ==, !=, ~= (near)</li>
+ * </ul>
+ *
+ * <p>Supported functions: abs, acos, asin, atan, atan2, cbrt, ceil, cos, cosh,
+ * exp, floor, ln, log, log10, max, max, min, min, rint, round, sin, sinh,
+ * sqrt, tan, tanh and more. (See the Functions class or the wiki)</p>
+ *
+ * <p>Constants: e, pi</p>
+ *
+ * <p>To compile an equation, run
+ * {@code Expression.compile("expression here", "var1", "var2"...)}.
+ * If you wish to run the equation multiple times, you can then optimize it,
+ * by calling {@link #optimize()}. You can then run the equation as many times
+ * as you want by calling {@link #evaluate(double...)}. You do not need to
+ * pass values for all variables specified while compiling.
+ * To query variables after evaluation, you can use
+ * {@link #getVariable(String, boolean)}. To get a value out of these, use
+ * {@link Variable#getValue()}.</p>
+ *
+ * <p>Variables are also supported and can be set either by passing values
+ * to {@link #evaluate(double...)}.</p>
+ */
+public class Expression {
+
+    private static final ThreadLocal<ArrayDeque<Expression>> instance = new ThreadLocal<ArrayDeque<Expression>>() {
+        @Override
+        protected ArrayDeque<Expression> initialValue() {
+            return new ArrayDeque<>();
+        }
+    };
+
+    private final Map<String, RValue> variables = new HashMap<String, RValue>();
+    private final String[] variableNames;
+    private Variable[] variableArray;
+    private RValue root;
+    private final Functions functions = new Functions();
+    private ExpressionEnvironment environment;
+
+    public static Expression compile(String expression, String... variableNames) throws ExpressionException {
+        return new Expression(expression, variableNames);
+    }
+
+    private Expression(String expression, String... variableNames) throws ExpressionException {
+        this(Lexer.tokenize(expression), variableNames);
+    }
+
+    private Expression(List<Token> tokens, String... variableNames) throws ExpressionException {
+        variables.put("e", new Constant(-1, Math.E));
+        variables.put("pi", new Constant(-1, Math.PI));
+        variables.put("true", new Constant(-1, 1));
+        variables.put("false", new Constant(-1, 0));
+
+        this.variableNames = variableNames;
+        variableArray = new Variable[variableNames.length];
+        for (int i = 0; i < variableNames.length; i++) {
+            String variableName = variableNames[i];
+            if (variables.containsKey(variableName)) {
+                throw new ExpressionException(-1, "Tried to overwrite identifier '" + variableName + "'");
+            }
+            Variable var = new Variable(0);
+            variables.put(variableName, var);
+            variableArray[i] = var;
+        }
+
+        root = Parser.parse(tokens, this);
+    }
+
+    public double evaluate(double... values) throws EvaluationException {
+        for (int i = 0; i < values.length; i++) {
+            Variable var = variableArray[i];
+            var.value = values[i];
+        }
+        pushInstance();
+        try {
+            return root.getValue();
+        } catch (ReturnException e) {
+            return e.getValue();
+        } finally {
+            popInstance();
+        }
+    }
+
+    public void optimize() throws EvaluationException {
+        root = root.optimize();
+    }
+
+    @Override
+    public String toString() {
+        return root.toString();
+    }
+
+    public RValue getVariable(String name, boolean create) {
+        RValue variable = variables.get(name);
+        if (variable == null && create) {
+            variables.put(name, variable = new Variable(0));
+        }
+
+        return variable;
+    }
+
+    public static Expression getInstance() {
+        return instance.get().peek();
+    }
+
+    private void pushInstance() {
+        ArrayDeque<Expression> foo = instance.get();
+        foo.push(this);
+    }
+
+    private void popInstance() {
+        ArrayDeque<Expression> foo = instance.get();
+
+        foo.pop();
+    }
+
+    public Functions getFunctions() {
+        return functions;
+    }
+
+    public ExpressionEnvironment getEnvironment() {
+        return environment;
+    }
+
+    public void setEnvironment(ExpressionEnvironment environment) {
+        this.environment = environment;
+    }
+
+    public static Class<?> inject() {
+        return Expression.class;
+    }
+
+}
diff --git a/core/src/main/java/com/sk89q/worldedit/internal/expression/runtime/ExpressionEnvironment.java b/core/src/main/java/com/sk89q/worldedit/internal/expression/runtime/ExpressionEnvironment.java
new file mode 100644
index 00000000..7b1ac363
--- /dev/null
+++ b/core/src/main/java/com/sk89q/worldedit/internal/expression/runtime/ExpressionEnvironment.java
@@ -0,0 +1,36 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.internal.expression.runtime;
+
+import com.sk89q.worldedit.blocks.BaseBlock;
+
+/**
+ * Represents a way to access blocks in a world. Has to accept non-rounded coordinates.
+ */
+public interface ExpressionEnvironment {
+
+    BaseBlock getBlock(double x, double y, double z);
+    BaseBlock getBlockAbs(double x, double y, double z);
+    BaseBlock getBlockRel(double x, double y, double z);
+
+    public static Class<?> inject() {
+        return ExpressionEnvironment.class;
+    }
+}
diff --git a/core/src/main/java/com/sk89q/worldedit/internal/expression/runtime/Function.java b/core/src/main/java/com/sk89q/worldedit/internal/expression/runtime/Function.java
new file mode 100644
index 00000000..2c3d0dbf
--- /dev/null
+++ b/core/src/main/java/com/sk89q/worldedit/internal/expression/runtime/Function.java
@@ -0,0 +1,127 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.internal.expression.runtime;
+
+import com.sk89q.worldedit.internal.expression.Expression;
+import com.sk89q.worldedit.internal.expression.parser.ParserException;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+/**
+ * Wrapper for a Java method and its arguments (other Nodes).
+ */
+public class Function extends Node {
+
+    /**
+     * Add this annotation on functions that don't always return the same value
+     * for the same inputs and on functions with side-effects.
+     */
+    @Retention(RetentionPolicy.RUNTIME)
+    public @interface Dynamic { }
+
+    public final Method method;
+    public final RValue[] args;
+
+    public Function(int position, Method method, RValue... args) {
+        super(position);
+        this.method = method;
+        this.method.setAccessible(true);
+        this.args = args;
+    }
+
+    @Override
+    public final double getValue() throws EvaluationException {
+        return invokeMethod(method, args);
+    }
+
+    public static double invokeMethod(Method method, Object[] args) throws EvaluationException {
+        try {
+            return (Double) method.invoke(null, args);
+        } catch (InvocationTargetException e) {
+            if (e.getTargetException() instanceof EvaluationException) {
+                throw (EvaluationException) e.getTargetException();
+            }
+            throw new EvaluationException(-1, "Exception caught while evaluating expression", e.getTargetException());
+        } catch (IllegalAccessException e) {
+            throw new EvaluationException(-1, "Internal error while evaluating expression", e);
+        }
+    }
+
+    @Override
+    public String toString() {
+        final StringBuilder ret = new StringBuilder(method.getName()).append('(');
+        boolean first = true;
+        for (Object obj : args) {
+            if (!first) {
+                ret.append(", ");
+            }
+            first = false;
+            ret.append(obj);
+        }
+        return ret.append(')').toString();
+    }
+
+    @Override
+    public char id() {
+        return 'f';
+    }
+
+    @Override
+    public RValue optimize() throws EvaluationException {
+        final RValue[] optimizedArgs = new RValue[args.length];
+        boolean optimizable = !method.isAnnotationPresent(Dynamic.class);
+        int position = getPosition();
+        for (int i = 0; i < args.length; ++i) {
+            final RValue optimized = optimizedArgs[i] = args[i].optimize();
+
+            if (!(optimized instanceof Constant)) {
+                optimizable = false;
+            }
+
+            if (optimized.getPosition() < position) {
+                position = optimized.getPosition();
+            }
+        }
+
+        if (optimizable) {
+            return new Constant(position, invokeMethod(method, optimizedArgs));
+        } else {
+            return new Function(position, method, optimizedArgs);
+        }
+    }
+
+    @Override
+    public RValue bindVariables(Expression expression, boolean preferLValue) throws ParserException {
+        final Class<?>[] parameters = method.getParameterTypes();
+        for (int i = 0; i < args.length; ++i) {
+            final boolean argumentPrefersLValue = LValue.class.isAssignableFrom(parameters[i]);
+            args[i] = args[i].bindVariables(expression, argumentPrefersLValue);
+        }
+
+        return this;
+    }
+
+    public static Class<?> inject() {
+        return Function.class;
+    }
+}
diff --git a/core/src/main/java/com/sk89q/worldedit/internal/expression/runtime/Functions.java b/core/src/main/java/com/sk89q/worldedit/internal/expression/runtime/Functions.java
new file mode 100644
index 00000000..8b93cb83
--- /dev/null
+++ b/core/src/main/java/com/sk89q/worldedit/internal/expression/runtime/Functions.java
@@ -0,0 +1,511 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.internal.expression.runtime;
+
+import com.sk89q.worldedit.Vector;
+import com.sk89q.worldedit.blocks.BaseBlock;
+import com.sk89q.worldedit.internal.expression.Expression;
+import com.sk89q.worldedit.internal.expression.runtime.Function.Dynamic;
+import com.sk89q.worldedit.math.noise.PerlinNoise;
+import com.sk89q.worldedit.math.noise.RidgedMultiFractalNoise;
+import com.sk89q.worldedit.math.noise.VoronoiNoise;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Random;
+
+/**
+ * Contains all functions that can be used in expressions.
+ */
+@SuppressWarnings("UnusedDeclaration")
+public final class Functions {
+
+    private static class Overload {
+        private final Method method;
+        private final int mask;
+        private final boolean isSetter;
+
+        private Overload(Method method) throws IllegalArgumentException {
+            this.method = method;
+
+            boolean isSetter = false;
+            int accum = 0;
+            Class<?>[] parameters = method.getParameterTypes();
+            for (Class<?> parameter : parameters) {
+                if (isSetter) {
+                    throw new IllegalArgumentException("Method takes arguments that can't be cast to RValue.");
+                }
+
+                if (double.class.equals(parameter)) {
+                    isSetter = true;
+                    continue;
+                }
+
+                if (!RValue.class.isAssignableFrom(parameter)) {
+                    throw new IllegalArgumentException("Method takes arguments that can't be cast to RValue.");
+                }
+
+                accum <<= 2;
+
+                if (LValue.class.isAssignableFrom(parameter)) {
+                    accum |= 3;
+                } else {
+                    accum |= 1;
+                }
+            }
+            mask = accum;
+            this.isSetter = isSetter;
+        }
+
+        public boolean matches(boolean isSetter, RValue... args) {
+            if (this.isSetter != isSetter) {
+                return false;
+            }
+
+            if (this.method.getParameterTypes().length != args.length) { // TODO: optimize
+                return false;
+            }
+
+            int accum = 0;
+            for (RValue argument : args) {
+                accum <<= 2;
+
+                if (argument instanceof LValue) {
+                    accum |= 3;
+                } else {
+                    accum |= 1;
+                }
+            }
+
+            return (accum & mask) == mask;
+        }
+    }
+
+    public static Function getFunction(int position, String name, RValue... args) throws NoSuchMethodException {
+        final Method getter = getMethod(name, false, args);
+        try {
+            Method setter = getMethod(name, true, args);
+            return new LValueFunction(position, getter, setter, args);
+        } catch (NoSuchMethodException e) {
+            return new Function(position, getter, args);
+        }
+    }
+
+    private static Method getMethod(String name, boolean isSetter, RValue... args) throws NoSuchMethodException {
+        final List<Overload> overloads = functions.get(name);
+        if (overloads != null) {
+            for (Overload overload : overloads) {
+                if (overload.matches(isSetter, args)) {
+                    return overload.method;
+                }
+            }
+        }
+
+        throw new NoSuchMethodException(); // TODO: return null (check for side-effects first)
+    }
+
+    private static final Map<String, List<Overload>> functions = new HashMap<String, List<Overload>>();
+    static {
+        for (Method method : Functions.class.getMethods()) {
+            try {
+                addFunction(method);
+            } catch (IllegalArgumentException ignored) { }
+        }
+    }
+
+
+    public static void addFunction(Method method) throws IllegalArgumentException {
+        final String methodName = method.getName();
+
+        Overload overload = new Overload(method);
+
+        List<Overload> overloads = functions.get(methodName);
+        if (overloads == null) {
+            functions.put(methodName, overloads = new ArrayList<Overload>());
+        }
+
+        overloads.add(overload);
+    }
+
+
+    public static double sin(RValue x) throws EvaluationException {
+        return Math.sin(x.getValue());
+    }
+
+    public static double cos(RValue x) throws EvaluationException {
+        return Math.cos(x.getValue());
+    }
+
+    public static double tan(RValue x) throws EvaluationException {
+        return Math.tan(x.getValue());
+    }
+
+
+    public static double asin(RValue x) throws EvaluationException {
+        return Math.asin(x.getValue());
+    }
+
+    public static double acos(RValue x) throws EvaluationException {
+        return Math.acos(x.getValue());
+    }
+
+    public static double atan(RValue x) throws EvaluationException {
+        return Math.atan(x.getValue());
+    }
+
+    public static double atan2(RValue y, RValue x) throws EvaluationException {
+        return Math.atan2(y.getValue(), x.getValue());
+    }
+
+
+    public static double sinh(RValue x) throws EvaluationException {
+        return Math.sinh(x.getValue());
+    }
+
+    public static double cosh(RValue x) throws EvaluationException {
+        return Math.cosh(x.getValue());
+    }
+
+    public static double tanh(RValue x) throws EvaluationException {
+        return Math.tanh(x.getValue());
+    }
+
+
+    public static double sqrt(RValue x) throws EvaluationException {
+        return Math.sqrt(x.getValue());
+    }
+
+    public static double cbrt(RValue x) throws EvaluationException {
+        return Math.cbrt(x.getValue());
+    }
+
+
+    public static double abs(RValue x) throws EvaluationException {
+        return Math.abs(x.getValue());
+    }
+
+    public static double min(RValue a, RValue b) throws EvaluationException {
+        return Math.min(a.getValue(), b.getValue());
+    }
+
+    public static double min(RValue a, RValue b, RValue c) throws EvaluationException {
+        return Math.min(a.getValue(), Math.min(b.getValue(), c.getValue()));
+    }
+
+    public static double max(RValue a, RValue b) throws EvaluationException {
+        return Math.max(a.getValue(), b.getValue());
+    }
+
+    public static double max(RValue a, RValue b, RValue c) throws EvaluationException {
+        return Math.max(a.getValue(), Math.max(b.getValue(), c.getValue()));
+    }
+
+
+    public static double ceil(RValue x) throws EvaluationException {
+        return Math.ceil(x.getValue());
+    }
+
+    public static double floor(RValue x) throws EvaluationException {
+        return Math.floor(x.getValue());
+    }
+
+    public static double rint(RValue x) throws EvaluationException {
+        return Math.rint(x.getValue());
+    }
+
+    public static double round(RValue x) throws EvaluationException {
+        return Math.round(x.getValue());
+    }
+
+
+    public static double exp(RValue x) throws EvaluationException {
+        return Math.exp(x.getValue());
+    }
+
+    public static double ln(RValue x) throws EvaluationException {
+        return Math.log(x.getValue());
+    }
+
+    public static double log(RValue x) throws EvaluationException {
+        return Math.log(x.getValue());
+    }
+
+    public static double log10(RValue x) throws EvaluationException {
+        return Math.log10(x.getValue());
+    }
+
+
+    public static double rotate(LValue x, LValue y, RValue angle) throws EvaluationException {
+        final double f = angle.getValue();
+
+        final double cosF = Math.cos(f);
+        final double sinF = Math.sin(f);
+
+        final double xOld = x.getValue();
+        final double yOld = y.getValue();
+
+        x.assign(xOld * cosF - yOld * sinF);
+        y.assign(xOld * sinF + yOld * cosF);
+
+        return 0.0;
+    }
+
+    public static double swap(LValue x, LValue y) throws EvaluationException {
+        final double tmp = x.getValue();
+
+        x.assign(y.getValue());
+        y.assign(tmp);
+
+        return 0.0;
+    }
+
+
+    private static final Map<Integer, double[]> gmegabuf = new HashMap<Integer, double[]>();
+    private final Map<Integer, double[]> megabuf = new HashMap<Integer, double[]>();
+
+    public Map<Integer, double[]> getMegabuf() {
+        return megabuf;
+    }
+
+    private static double[] getSubBuffer(Map<Integer, double[]> megabuf, Integer key) {
+        double[] ret = megabuf.get(key);
+        if (ret == null) {
+            megabuf.put(key, ret = new double[1024]);
+        }
+        return ret;
+    }
+
+    private static double getBufferItem(final Map<Integer, double[]> megabuf, final int index) {
+        return getSubBuffer(megabuf, index & ~1023)[index & 1023];
+    }
+
+    private static double setBufferItem(final Map<Integer, double[]> megabuf, final int index, double value) {
+        return getSubBuffer(megabuf, index & ~1023)[index & 1023] = value;
+    }
+
+    @Dynamic
+    public static double gmegabuf(RValue index) throws EvaluationException {
+        return getBufferItem(gmegabuf, (int) index.getValue());
+    }
+
+    @Dynamic
+    public static double gmegabuf(RValue index, double value) throws EvaluationException {
+        return setBufferItem(gmegabuf, (int) index.getValue(), value);
+    }
+
+    @Dynamic
+    public static double megabuf(RValue index) throws EvaluationException {
+        return getBufferItem(Expression.getInstance().getFunctions().megabuf, (int) index.getValue());
+    }
+
+    @Dynamic
+    public static double megabuf(RValue index, double value) throws EvaluationException {
+        return setBufferItem(Expression.getInstance().getFunctions().megabuf, (int) index.getValue(), value);
+    }
+
+    @Dynamic
+    public static double closest(RValue x, RValue y, RValue z, RValue index, RValue count, RValue stride) throws EvaluationException {
+        return findClosest(
+                Expression.getInstance().getFunctions().megabuf,
+                x.getValue(),
+                y.getValue(),
+                z.getValue(),
+                (int) index.getValue(),
+                (int) count.getValue(),
+                (int) stride.getValue()
+        );
+    }
+
+    @Dynamic
+    public static double gclosest(RValue x, RValue y, RValue z, RValue index, RValue count, RValue stride) throws EvaluationException {
+        return findClosest(
+                gmegabuf,
+                x.getValue(),
+                y.getValue(),
+                z.getValue(),
+                (int) index.getValue(),
+                (int) count.getValue(),
+                (int) stride.getValue()
+        );
+    }
+
+    private static double findClosest(Map<Integer, double[]> megabuf, double x, double y, double z, int index, int count, int stride) {
+        int closestIndex = -1;
+        double minDistanceSquared = Double.MAX_VALUE;
+
+        for (int i = 0; i < count; ++i) {
+            double currentX = getBufferItem(megabuf, index+0) - x;
+            double currentY = getBufferItem(megabuf, index+1) - y;
+            double currentZ = getBufferItem(megabuf, index+2) - z;
+
+            double currentDistanceSquared = currentX*currentX + currentY*currentY + currentZ*currentZ;
+
+            if (currentDistanceSquared < minDistanceSquared) {
+                minDistanceSquared = currentDistanceSquared;
+                closestIndex = index;
+            }
+
+            index += stride;
+        }
+
+        return closestIndex;
+    }
+
+
+    private static final Random random = new Random();
+
+    @Dynamic
+    public static double random() {
+        return random.nextDouble();
+    }
+
+    @Dynamic
+    public static double randint(RValue max) throws EvaluationException {
+        return random.nextInt((int) Math.floor(max.getValue()));
+    }
+
+    private static final ThreadLocal<PerlinNoise> localPerlin = new ThreadLocal<PerlinNoise>() {
+        @Override
+        protected PerlinNoise initialValue() {
+            return new PerlinNoise();
+        }
+    };
+
+    public static double perlin(RValue seed, RValue x, RValue y, RValue z, RValue frequency, RValue octaves, RValue persistence) throws EvaluationException {
+        PerlinNoise perlin = localPerlin.get();
+        try {
+            perlin.setSeed((int) seed.getValue());
+            perlin.setFrequency(frequency.getValue());
+            perlin.setOctaveCount((int) octaves.getValue());
+            perlin.setPersistence(persistence.getValue());
+        } catch (IllegalArgumentException e) {
+            throw new EvaluationException(0, "Perlin noise error: " + e.getMessage());
+        }
+        return perlin.noise(new Vector(x.getValue(), y.getValue(), z.getValue()));
+    }
+
+    private static final ThreadLocal<VoronoiNoise> localVoronoi = new ThreadLocal<VoronoiNoise>() {
+        @Override
+        protected VoronoiNoise initialValue() {
+            return new VoronoiNoise();
+        }
+    };
+
+    public static double voronoi(RValue seed, RValue x, RValue y, RValue z, RValue frequency) throws EvaluationException {
+        VoronoiNoise voronoi = localVoronoi.get();
+        try {
+            voronoi.setSeed((int) seed.getValue());
+            voronoi.setFrequency(frequency.getValue());
+        } catch (IllegalArgumentException e) {
+            throw new EvaluationException(0, "Voronoi error: " + e.getMessage());
+        }
+        return voronoi.noise(new Vector(x.getValue(), y.getValue(), z.getValue()));
+    }
+
+    private static final ThreadLocal<RidgedMultiFractalNoise> localRidgedMulti = new ThreadLocal<RidgedMultiFractalNoise>() {
+        @Override
+        protected RidgedMultiFractalNoise initialValue() {
+            return new RidgedMultiFractalNoise();
+        }
+    };
+
+    public static double ridgedmulti(RValue seed, RValue x, RValue y, RValue z, RValue frequency, RValue octaves) throws EvaluationException {
+        RidgedMultiFractalNoise ridgedMulti = localRidgedMulti.get();
+        try {
+            ridgedMulti.setSeed((int) seed.getValue());
+            ridgedMulti.setFrequency(frequency.getValue());
+            ridgedMulti.setOctaveCount((int) octaves.getValue());
+        } catch (IllegalArgumentException e) {
+            throw new EvaluationException(0, "Ridged multi error: " + e.getMessage());
+        }
+        return ridgedMulti.noise(new Vector(x.getValue(), y.getValue(), z.getValue()));
+    }
+
+    private static double queryInternal(RValue type, RValue data, double typeId, double dataValue) throws EvaluationException {
+        // Compare to input values and determine return value
+        // -1 is a wildcard, always true
+        final double ret = ((type.getValue() == -1 || typeId == type.getValue())
+                && (data.getValue() == -1 || dataValue == data.getValue())) ? 1.0 : 0.0;
+
+        if (type instanceof LValue) {
+            ((LValue) type).assign(typeId);
+        }
+
+        if (data instanceof LValue) {
+            ((LValue) data).assign(dataValue);
+        }
+
+        return ret;
+    }
+
+    @Dynamic
+    public static double query(RValue x, RValue y, RValue z, RValue type, RValue data) throws EvaluationException {
+        final double xp = x.getValue();
+        final double yp = y.getValue();
+        final double zp = z.getValue();
+
+        final ExpressionEnvironment environment = Expression.getInstance().getEnvironment();
+
+        // Read values from world
+        BaseBlock block = environment.getBlock(xp, yp, zp);
+        int typeId = block.getId();
+        int dataValue = block.getData();
+
+        return queryInternal(type, data, typeId, dataValue);
+    }
+
+    @Dynamic
+    public static double queryAbs(RValue x, RValue y, RValue z, RValue type, RValue data) throws EvaluationException {
+        final double xp = x.getValue();
+        final double yp = y.getValue();
+        final double zp = z.getValue();
+
+        final ExpressionEnvironment environment = Expression.getInstance().getEnvironment();
+
+        // Read values from world
+        BaseBlock block = environment.getBlockAbs(xp, yp, zp);
+        int typeId = block.getId();
+        int dataValue = block.getData();
+
+        return queryInternal(type, data, typeId, dataValue);
+    }
+
+    @Dynamic
+    public static double queryRel(RValue x, RValue y, RValue z, RValue type, RValue data) throws EvaluationException {
+        final double xp = x.getValue();
+        final double yp = y.getValue();
+        final double zp = z.getValue();
+
+        final ExpressionEnvironment environment = Expression.getInstance().getEnvironment();
+
+        // Read values from world
+        BaseBlock block = environment.getBlockRel(xp, yp, zp);
+        int typeId = block.getId();
+        int dataValue = block.getData();
+
+        return queryInternal(type, data, typeId, dataValue);
+    }
+
+    public static Class<?> inject() {
+        return Functions.class;
+    }
+}
diff --git a/core/src/main/java/com/sk89q/worldedit/regions/shape/WorldEditExpressionEnvironment.java b/core/src/main/java/com/sk89q/worldedit/regions/shape/WorldEditExpressionEnvironment.java
new file mode 100644
index 00000000..78f286ef
--- /dev/null
+++ b/core/src/main/java/com/sk89q/worldedit/regions/shape/WorldEditExpressionEnvironment.java
@@ -0,0 +1,68 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.regions.shape;
+
+import com.sk89q.worldedit.EditSession;
+import com.sk89q.worldedit.Vector;
+import com.sk89q.worldedit.blocks.BaseBlock;
+import com.sk89q.worldedit.internal.expression.runtime.ExpressionEnvironment;
+
+public class WorldEditExpressionEnvironment implements ExpressionEnvironment {
+
+    private final Vector unit;
+    private final Vector zero2;
+    private Vector current = new Vector();
+    private EditSession editSession;
+
+    public WorldEditExpressionEnvironment(EditSession editSession, Vector unit, Vector zero) {
+        this.editSession = editSession;
+        this.unit = unit;
+        this.zero2 = zero.add(0.5, 0.5, 0.5);
+    }
+
+    @Override
+    public BaseBlock getBlock(double x, double y, double z) {
+        x = x * unit.getX() + zero2.getX();
+        y = y * unit.getY() + zero2.getY();
+        z = z * unit.getZ() + zero2.getZ();
+        return editSession.getBlock((int) x, (int) y, (int) z);
+    }
+
+    @Override
+    public BaseBlock getBlockAbs(double x, double y, double z) {
+        return editSession.getBlock((int) x, (int) y, (int) z);
+    }
+
+    @Override
+    public BaseBlock getBlockRel(double x, double y, double z) {
+        x = x + current.getBlockX();
+        y = y + current.getBlockY();
+        z = z + current.getBlockZ();
+        return editSession.getBlock((int) x, (int) y, (int) z);
+    }
+
+    public void setCurrentBlock(Vector current) {
+        this.current = current;
+    }
+
+    public static Class<?> inject() {
+        return WorldEditExpressionEnvironment.class;
+    }
+}
diff --git a/forge110/src/main/java/com/boydti/fawe/forge/FaweForge.java b/forge110/src/main/java/com/boydti/fawe/forge/FaweForge.java
index 377e1dfe..436edf76 100644
--- a/forge110/src/main/java/com/boydti/fawe/forge/FaweForge.java
+++ b/forge110/src/main/java/com/boydti/fawe/forge/FaweForge.java
@@ -19,10 +19,8 @@ import java.io.File;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
-import java.util.Map;
 import java.util.UUID;
 import javax.management.InstanceAlreadyExistsException;
-import net.minecraft.command.ServerCommandManager;
 import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.server.MinecraftServer;
 import net.minecraftforge.fml.common.FMLCommonHandler;
@@ -75,11 +73,8 @@ public class FaweForge implements IFawe {
         this.commands.put(label, cmd);
     }
 
-    public void insertCommands() {
-        for (Map.Entry<String, FaweCommand> entry : commands.entrySet()) {
-            ServerCommandManager scm = (ServerCommandManager) FMLCommonHandler.instance().getMinecraftServerInstance().getCommandManager();
-            scm.registerCommand(new ForgeCommand(entry.getKey(), entry.getValue()));
-        }
+    public HashMap<String, FaweCommand> getCommands() {
+        return commands;
     }
 
     @Override
diff --git a/forge110/src/main/java/com/boydti/fawe/forge/ForgeMain.java b/forge110/src/main/java/com/boydti/fawe/forge/ForgeMain.java
index 64d1353a..8333bf72 100644
--- a/forge110/src/main/java/com/boydti/fawe/forge/ForgeMain.java
+++ b/forge110/src/main/java/com/boydti/fawe/forge/ForgeMain.java
@@ -1,9 +1,11 @@
 package com.boydti.fawe.forge;
 
 import com.boydti.fawe.Fawe;
+import com.boydti.fawe.object.FaweCommand;
 import com.boydti.fawe.object.FawePlayer;
 import java.io.File;
 import java.util.List;
+import java.util.Map;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraftforge.common.MinecraftForge;
@@ -34,7 +36,9 @@ public class ForgeMain {
 
     @Mod.EventHandler
     public void serverLoad(FMLServerStartingEvent event) {
-        IMP.insertCommands();
+        for (Map.Entry<String, FaweCommand> entry : IMP.getCommands().entrySet()) {
+            event.registerServerCommand(new ForgeCommand(entry.getKey(), entry.getValue()));
+        }
     }
 
     @SubscribeEvent(priority = EventPriority.LOWEST)
diff --git a/forge110/src/main/java/com/boydti/fawe/forge/v110/ForgeChunk_All.java b/forge110/src/main/java/com/boydti/fawe/forge/v110/ForgeChunk_All.java
index 2cbeaf94..fef8712e 100644
--- a/forge110/src/main/java/com/boydti/fawe/forge/v110/ForgeChunk_All.java
+++ b/forge110/src/main/java/com/boydti/fawe/forge/v110/ForgeChunk_All.java
@@ -356,6 +356,7 @@ public class ForgeChunk_All extends CharFaweChunk<Chunk, ForgeQueue_All> {
                     tileEntity.readFromNBT(tag); // ReadTagIntoTile
                 }
             }
+            sectionPalettes = null;
         } catch (Throwable e) {
             MainUtil.handleError(e);
         }
diff --git a/forge111/src/main/java/com/boydti/fawe/forge/FaweForge.java b/forge111/src/main/java/com/boydti/fawe/forge/FaweForge.java
index a31e161b..7b50b168 100644
--- a/forge111/src/main/java/com/boydti/fawe/forge/FaweForge.java
+++ b/forge111/src/main/java/com/boydti/fawe/forge/FaweForge.java
@@ -19,10 +19,8 @@ import java.io.File;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
-import java.util.Map;
 import java.util.UUID;
 import javax.management.InstanceAlreadyExistsException;
-import net.minecraft.command.ServerCommandManager;
 import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.server.MinecraftServer;
 import net.minecraftforge.fml.common.FMLCommonHandler;
@@ -70,18 +68,15 @@ public class FaweForge implements IFawe {
 
     private HashMap<String, FaweCommand> commands = new HashMap<>();
 
+    public HashMap<String, FaweCommand> getCommands() {
+        return commands;
+    }
+
     @Override
     public void setupCommand(String label, FaweCommand cmd) {
         this.commands.put(label, cmd);
     }
 
-    public void insertCommands() {
-        for (Map.Entry<String, FaweCommand> entry : commands.entrySet()) {
-            ServerCommandManager scm = (ServerCommandManager) FMLCommonHandler.instance().getMinecraftServerInstance().getCommandManager();
-            scm.registerCommand(new ForgeCommand(entry.getKey(), entry.getValue()));
-        }
-    }
-
     @Override
     public FawePlayer wrap(Object obj) {
         EntityPlayerMP player = null;
diff --git a/forge111/src/main/java/com/boydti/fawe/forge/ForgeMain.java b/forge111/src/main/java/com/boydti/fawe/forge/ForgeMain.java
index ef196577..a7eba924 100644
--- a/forge111/src/main/java/com/boydti/fawe/forge/ForgeMain.java
+++ b/forge111/src/main/java/com/boydti/fawe/forge/ForgeMain.java
@@ -1,8 +1,10 @@
 package com.boydti.fawe.forge;
 
 import com.boydti.fawe.Fawe;
+import com.boydti.fawe.object.FaweCommand;
 import com.boydti.fawe.object.FawePlayer;
 import java.io.File;
+import java.util.Map;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraftforge.common.MinecraftForge;
@@ -33,7 +35,9 @@ public class ForgeMain {
 
     @Mod.EventHandler
     public void serverLoad(FMLServerStartingEvent event) {
-        IMP.insertCommands();
+        for (Map.Entry<String, FaweCommand> entry : IMP.getCommands().entrySet()) {
+            event.registerServerCommand(new ForgeCommand(entry.getKey(), entry.getValue()));
+        }
     }
 
     @SubscribeEvent(priority = EventPriority.LOWEST)
diff --git a/forge111/src/main/java/com/boydti/fawe/forge/v111/ForgeChunk_All.java b/forge111/src/main/java/com/boydti/fawe/forge/v111/ForgeChunk_All.java
index 4c2e7a35..584e61d0 100644
--- a/forge111/src/main/java/com/boydti/fawe/forge/v111/ForgeChunk_All.java
+++ b/forge111/src/main/java/com/boydti/fawe/forge/v111/ForgeChunk_All.java
@@ -379,6 +379,7 @@ public class ForgeChunk_All extends CharFaweChunk<Chunk, ForgeQueue_All> {
                     tileEntity.readFromNBT(tag); // ReadTagIntoTile
                 }
             }
+            sectionPalettes = null;
         } catch (Throwable e) {
             MainUtil.handleError(e);
         }
diff --git a/forge111/src/main/java/com/boydti/fawe/forge/v111/ForgeQueue_All.java b/forge111/src/main/java/com/boydti/fawe/forge/v111/ForgeQueue_All.java
index efbf0bd2..37ae0958 100644
--- a/forge111/src/main/java/com/boydti/fawe/forge/v111/ForgeQueue_All.java
+++ b/forge111/src/main/java/com/boydti/fawe/forge/v111/ForgeQueue_All.java
@@ -8,7 +8,6 @@ import com.boydti.fawe.forge.MutableGenLayer;
 import com.boydti.fawe.object.FaweChunk;
 import com.boydti.fawe.object.FawePlayer;
 import com.boydti.fawe.object.brush.visualization.VisualChunk;
-import java.util.concurrent.atomic.LongAdder;
 import com.boydti.fawe.object.visitor.FaweChunkVisitor;
 import com.boydti.fawe.util.MainUtil;
 import com.boydti.fawe.util.MathMan;
@@ -30,6 +29,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.UUID;
+import java.util.concurrent.atomic.LongAdder;
 import net.minecraft.block.Block;
 import net.minecraft.block.BlockFalling;
 import net.minecraft.block.state.IBlockState;
diff --git a/forge1710/src/main/java/com/boydti/fawe/forge/v1710/ForgeChunk_All.java b/forge1710/src/main/java/com/boydti/fawe/forge/v1710/ForgeChunk_All.java
index cf7564b4..487e4521 100644
--- a/forge1710/src/main/java/com/boydti/fawe/forge/v1710/ForgeChunk_All.java
+++ b/forge1710/src/main/java/com/boydti/fawe/forge/v1710/ForgeChunk_All.java
@@ -131,7 +131,7 @@ public class ForgeChunk_All extends CharFaweChunk<Chunk, ForgeQueue_All> {
                 }
                 if (id > 255) {
                     NibbleArray nibble = extended[i];
-                    if (extended == null) {
+                    if (nibble == null) {
                         extended[i] = nibble = new NibbleArray(4096, 4);
                     }
                     nibble.set(x, y & 15, z, id >> 8);
@@ -315,6 +315,12 @@ public class ForgeChunk_All extends CharFaweChunk<Chunk, ForgeQueue_All> {
                             continue;
                         case 1:
                             currentIdArray[k] = 0;
+                            if (extra) {
+                                int x = FaweCache.CACHE_X[0][k];
+                                int y = FaweCache.CACHE_Y[0][k];
+                                int z = FaweCache.CACHE_Z[0][k];
+                                currentExtraArray.set(x, y, z, 0);
+                            }
                             continue;
                         default:
                             solid++;
diff --git a/forge1710/src/main/java/com/boydti/fawe/forge/v1710/ForgeQueue_All.java b/forge1710/src/main/java/com/boydti/fawe/forge/v1710/ForgeQueue_All.java
index b89b3619..3084d5db 100644
--- a/forge1710/src/main/java/com/boydti/fawe/forge/v1710/ForgeQueue_All.java
+++ b/forge1710/src/main/java/com/boydti/fawe/forge/v1710/ForgeQueue_All.java
@@ -166,10 +166,18 @@ public class ForgeQueue_All extends NMSMappedFaweQueue<World, Chunk, ExtendedBlo
     @Override
     public int getCombinedId4Data(ExtendedBlockStorage ls, int x, int y, int z) {
         byte[] ids = ls.getBlockLSBArray();
-        NibbleArray datasNibble = ls.getBlockMSBArray();
+        NibbleArray currentDataArray = ls.getMetadataArray();
+        NibbleArray currentExtraArray = ls.getBlockMSBArray();
         int i = FaweCache.CACHE_J[y & 15][z & 15][x & 15];
-        int combined = ((ids[i] & 0xFF) << 4) + (datasNibble == null ? 0 : datasNibble.get(x & 15, y & 15, z & 15));
-        return combined;
+        int id = (ids[i] & 0xFF);
+        if (currentExtraArray != null) {
+            id += (currentExtraArray.get(x & 15, y & 15, z & 15)) << 8;
+        }
+        if (currentDataArray != null && FaweCache.hasData(id)) {
+            return (id << 4) + currentDataArray.get(x & 15, y & 15, z & 15);
+        } else {
+            return (id << 4);
+        }
     }
 
     @Override
diff --git a/forge194/src/main/java/com/boydti/fawe/forge/v194/ForgeChunk_All.java b/forge194/src/main/java/com/boydti/fawe/forge/v194/ForgeChunk_All.java
index c869c99b..5f37dbc8 100644
--- a/forge194/src/main/java/com/boydti/fawe/forge/v194/ForgeChunk_All.java
+++ b/forge194/src/main/java/com/boydti/fawe/forge/v194/ForgeChunk_All.java
@@ -354,6 +354,7 @@ public class ForgeChunk_All extends CharFaweChunk<Chunk, ForgeQueue_All> {
                     tileEntity.readFromNBT(tag); // ReadTagIntoTile
                 }
             }
+            sectionPalettes = null;
         } catch (Throwable e) {
             MainUtil.handleError(e);
         }