diff --git a/src/main/java/com/minelittlepony/unicopia/block/state/BlockStateMap.java b/src/main/java/com/minelittlepony/unicopia/block/state/BlockStateMap.java
index f6ec0900..edc08a56 100644
--- a/src/main/java/com/minelittlepony/unicopia/block/state/BlockStateMap.java
+++ b/src/main/java/com/minelittlepony/unicopia/block/state/BlockStateMap.java
@@ -1,6 +1,7 @@
 package com.minelittlepony.unicopia.block.state;
 
 import java.util.ArrayList;
+import java.util.List;
 import java.util.function.Predicate;
 
 import javax.annotation.Nonnull;
@@ -8,6 +9,7 @@ import javax.annotation.Nullable;
 
 import net.minecraft.block.Block;
 import net.minecraft.block.BlockState;
+import net.minecraft.block.Material;
 import net.minecraft.state.property.Property;
 import net.minecraft.tag.Tag;
 import net.minecraft.world.World;
@@ -16,43 +18,22 @@ import net.minecraft.world.World;
  * A collection of block-state mappings.
  *
  */
-class BlockStateMap extends ArrayList<StateMapping> implements BlockStateConverter {
-    private static final long serialVersionUID = 2602772651960588745L;
+class BlockStateMap implements BlockStateConverter {
+    private final List<StateMapping> mappings;
 
-    public void removeBlock(Predicate<BlockState> mapper) {
-        add(StateMapping.removeBlock(mapper));
-    }
-
-    public void removeBlock(Block from) {
-        add(StateMapping.removeBlock(from));
-    }
-
-
-    public void replaceBlock(Block from, Block to) {
-        add(StateMapping.replaceBlock(from, to));
-    }
-
-    public void replaceBlock(Tag<Block> from, Block to) {
-        add(StateMapping.replaceBlock(from, to));
-    }
-
-    public <T extends Comparable<T>> void replaceProperty(Block block, Property<T> property, T from, T to) {
-        add(StateMapping.replaceProperty(block, property, from, to));
-    }
-
-    public <T extends Comparable<T>> void setProperty(Block block, Property<T> property, T to) {
-        add(StateMapping.setProperty(block, property, to));
+    BlockStateMap(List<StateMapping> mappings) {
+        this.mappings = new ArrayList<>(mappings);
     }
 
     @Override
     public boolean canConvert(@Nullable BlockState state) {
-        return state != null && stream().anyMatch(i -> i.test(state));
+        return state != null && mappings.stream().anyMatch(i -> i.test(state));
     }
 
     @Override
     @Nonnull
     public BlockState getConverted(World world, @Nonnull BlockState state) {
-        for (StateMapping i : this) {
+        for (StateMapping i : mappings) {
             if (i.test(state)) {
                 return i.apply(world, state);
             }
@@ -60,4 +41,48 @@ class BlockStateMap extends ArrayList<StateMapping> implements BlockStateConvert
 
         return state;
     }
+
+    public static class Builder {
+        protected final ArrayList<StateMapping> items = new ArrayList<>();
+
+        public Builder add(StateMapping mapping) {
+            items.add(mapping);
+            return this;
+        }
+
+        public Builder removeBlock(Predicate<BlockState> mapper) {
+            return add(StateMapping.removeBlock(mapper));
+        }
+
+        public Builder removeBlock(Block from) {
+            return add(StateMapping.removeBlock(s -> s.isOf(from)));
+        }
+
+        public Builder replaceMaterial(Material from, Block to) {
+            return add(StateMapping.replaceMaterial(from, to));
+        }
+
+        public Builder replaceBlock(Block from, Block to) {
+            return add(StateMapping.replaceBlock(from, to));
+        }
+
+        public Builder replaceBlock(Tag<Block> from, Block to) {
+            return add(StateMapping.replaceBlock(from, to));
+        }
+
+        public <T extends Comparable<T>> Builder replaceProperty(Block block, Property<T> property, T from, T to) {
+            return add(StateMapping.replaceProperty(block, property, from, to));
+        }
+
+        public <T extends Comparable<T>> Builder setProperty(Block block, Property<T> property, T to) {
+            return add(StateMapping.build(
+                    s -> s.isOf(block),
+                    (w, s) -> s.with(property, to)));
+        }
+
+        @SuppressWarnings("unchecked")
+        public <T extends BlockStateConverter> T build() {
+            return (T)new BlockStateMap(items);
+        }
+    }
 }
diff --git a/src/main/java/com/minelittlepony/unicopia/block/state/ReversableBlockStateMap.java b/src/main/java/com/minelittlepony/unicopia/block/state/ReversableBlockStateMap.java
index 0d50c198..a2a2cb3b 100644
--- a/src/main/java/com/minelittlepony/unicopia/block/state/ReversableBlockStateMap.java
+++ b/src/main/java/com/minelittlepony/unicopia/block/state/ReversableBlockStateMap.java
@@ -1,18 +1,26 @@
 package com.minelittlepony.unicopia.block.state;
 
-class ReversableBlockStateMap extends BlockStateMap implements ReversableBlockStateConverter {
-    private static final long serialVersionUID = 6154365988455383098L;
+import java.util.List;
+import java.util.stream.Collectors;
 
-    private final BlockStateMap inverse = new BlockStateMap();
+class ReversableBlockStateMap extends BlockStateMap implements ReversableBlockStateConverter {
+    private final BlockStateMap inverse;
+
+    ReversableBlockStateMap(List<StateMapping> mappings) {
+        super(mappings);
+        inverse = new BlockStateMap(mappings.stream().map(StateMapping::inverse).collect(Collectors.toList()));
+    }
 
     @Override
     public BlockStateMap getInverse() {
         return inverse;
     }
 
-    @Override
-    public boolean add(StateMapping mapping) {
-        inverse.add(mapping.inverse());
-        return super.add(mapping);
+    public static class Builder extends BlockStateMap.Builder {
+        @Override
+        @SuppressWarnings("unchecked")
+        public <T extends BlockStateConverter> T build() {
+            return (T)new ReversableBlockStateMap(items);
+        }
     }
 }
diff --git a/src/main/java/com/minelittlepony/unicopia/block/state/StateMapping.java b/src/main/java/com/minelittlepony/unicopia/block/state/StateMapping.java
index 6bb4bd32..b22ee469 100644
--- a/src/main/java/com/minelittlepony/unicopia/block/state/StateMapping.java
+++ b/src/main/java/com/minelittlepony/unicopia/block/state/StateMapping.java
@@ -1,6 +1,5 @@
 package com.minelittlepony.unicopia.block.state;
 
-import java.util.Random;
 import java.util.function.BiFunction;
 import java.util.function.Function;
 import java.util.function.Predicate;
@@ -10,13 +9,36 @@ import javax.annotation.Nonnull;
 import net.minecraft.block.Block;
 import net.minecraft.block.BlockState;
 import net.minecraft.block.Blocks;
+import net.minecraft.block.Material;
+import net.minecraft.block.SnowBlock;
 import net.minecraft.state.property.Property;
 import net.minecraft.tag.Tag;
 import net.minecraft.world.World;
 
 interface StateMapping extends Predicate<BlockState>, BiFunction<World, BlockState, BlockState> {
 
-    Random RNG = new Random();
+    static StateMapping incrementSnow() {
+        return build(
+                isOf(Blocks.SNOW),
+                (w, s) -> {
+                    s = s.cycle(SnowBlock.LAYERS);
+                    if (s.get(SnowBlock.LAYERS) >= 7) {
+                        return Blocks.SNOW_BLOCK.getDefaultState();
+                    }
+
+                    return s;
+                });
+    }
+    static Predicate<BlockState> isOf(Block block) {
+        return s -> s.isOf(block);
+    }
+
+    static StateMapping replaceMaterial(Material mat, Block block) {
+        return build(isOf(Material.WATER), Blocks.ICE);
+    }
+    static Predicate<BlockState> isOf(Material mat) {
+        return s -> s.getMaterial() == mat;
+    }
 
     static StateMapping removeBlock(Predicate<BlockState> mapper) {
         return build(
@@ -24,10 +46,6 @@ interface StateMapping extends Predicate<BlockState>, BiFunction<World, BlockSta
                 (w, s) -> Blocks.AIR.getDefaultState());
     }
 
-    static StateMapping removeBlock(Block from) {
-        return removeBlock(s -> s.isOf(from));
-    }
-
     static StateMapping replaceBlock(Tag<Block> tag, Block to) {
         return build(
                 s -> s.isIn(tag),
@@ -42,7 +60,7 @@ interface StateMapping extends Predicate<BlockState>, BiFunction<World, BlockSta
     @SuppressWarnings("unchecked")
     static StateMapping replaceBlock(Block from, Block to) {
         return build(
-                s -> s.getBlock() == from,
+                s -> s.isOf(from),
                 (w, s) -> {
                     BlockState newState = to.getDefaultState();
                     for (@SuppressWarnings("rawtypes") Property i : s.getProperties()) {
@@ -57,21 +75,23 @@ interface StateMapping extends Predicate<BlockState>, BiFunction<World, BlockSta
 
     static <T extends Comparable<T>> StateMapping replaceProperty(Block block, Property<T> property, T from, T to) {
         return build(
-                s -> s.getBlock() == block && s.get(property) == from,
+                s -> s.isOf(block) && s.get(property) == from,
                 (w, s) -> s.with(property, to),
                 s -> replaceProperty(block, property, to, from));
     }
 
-    static <T extends Comparable<T>> StateMapping setProperty(Block block, Property<T> property, T to) {
-        return build(
-                s -> s.getBlock() == block,
-                (w, s) -> s.with(property, to));
+    static StateMapping build(Predicate<BlockState> predicate, Block result) {
+        return build(predicate, (w, s) -> result.getDefaultState());
     }
 
     static StateMapping build(Predicate<BlockState> predicate, BiFunction<World, BlockState, BlockState> converter) {
         return build(predicate, converter, s -> s);
     }
 
+    static StateMapping build(Predicate<BlockState> predicate, Block result, Function<StateMapping, StateMapping> inverter) {
+        return build(predicate, (w, s) -> result.getDefaultState(), inverter);
+    }
+
     static StateMapping build(Predicate<BlockState> predicate, BiFunction<World, BlockState, BlockState> converter, Function<StateMapping, StateMapping> inverter) {
         return new StateMapping() {
             private StateMapping inverse;
@@ -104,9 +124,7 @@ interface StateMapping extends Predicate<BlockState>, BiFunction<World, BlockSta
      * @return    True if the state can be converted
      */
     @Override
-    default boolean test(@Nonnull BlockState state) {
-        return true;
-    }
+    boolean test(@Nonnull BlockState state);
 
     /**
      * Converts the given state based on this mapping
@@ -117,15 +135,11 @@ interface StateMapping extends Predicate<BlockState>, BiFunction<World, BlockSta
      */
     @Nonnull
     @Override
-    default BlockState apply(World world, @Nonnull BlockState state) {
-        return state;
-    }
+    BlockState apply(World world, @Nonnull BlockState state);
 
     /**
      * Gets the inverse of this mapping if one exists. Otherwise returns itself.
      */
     @Nonnull
-    default StateMapping inverse() {
-        return this;
-    }
+    StateMapping inverse();
 }
diff --git a/src/main/java/com/minelittlepony/unicopia/block/state/StateMaps.java b/src/main/java/com/minelittlepony/unicopia/block/state/StateMaps.java
index c2a3a140..ace26198 100644
--- a/src/main/java/com/minelittlepony/unicopia/block/state/StateMaps.java
+++ b/src/main/java/com/minelittlepony/unicopia/block/state/StateMaps.java
@@ -1,114 +1,103 @@
 package com.minelittlepony.unicopia.block.state;
 
+import java.util.function.Predicate;
+
+import com.minelittlepony.unicopia.util.Registries;
+
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
 import net.minecraft.block.Blocks;
 import net.minecraft.block.FarmlandBlock;
 import net.minecraft.block.Material;
 import net.minecraft.block.OreBlock;
 import net.minecraft.block.PlantBlock;
 import net.minecraft.block.RedstoneWireBlock;
-import net.minecraft.block.SnowBlock;
 import net.minecraft.tag.BlockTags;
-import net.minecraft.util.Util;
+import net.minecraft.util.Identifier;
+import net.minecraft.util.registry.Registry;
 
 public class StateMaps {
-    public static final BlockStateConverter ICE_AFFECTED = register(Util.make(new BlockStateMap(), a -> {
-        a.add(StateMapping.build(
-                s -> s.getMaterial() == Material.WATER,
-                (w, s) -> Blocks.ICE.getDefaultState()));
-        a.add(StateMapping.build(
-                s -> s.getMaterial() == Material.LAVA,
-                (w, s) -> Blocks.OBSIDIAN.getDefaultState()));
-        a.add(StateMapping.build(
-                s -> s.getBlock() == Blocks.SNOW,
-                (w, s) -> {
-                    s = s.cycle(SnowBlock.LAYERS);
-                    if (s.get(SnowBlock.LAYERS) >= 7) {
-                        return Blocks.SNOW_BLOCK.getDefaultState();
-                    }
+    private static final Registry<BlockStateConverter> REGISTRY = Registries.createSimple(new Identifier("unicopia", "state_map"));
 
-                    return s;
-                }));
-        a.replaceBlock(Blocks.FIRE, Blocks.AIR);
-        a.setProperty(Blocks.REDSTONE_WIRE, RedstoneWireBlock.POWER, 0);
-    }), "ice");
+    public static final BlockStateConverter ICE_AFFECTED = register("ice", new BlockStateMap.Builder()
+            .replaceMaterial(Material.WATER, Blocks.ICE)
+            .replaceMaterial(Material.LAVA, Blocks.OBSIDIAN)
+            .add(StateMapping.incrementSnow())
+            .replaceBlock(Blocks.FIRE, Blocks.AIR)
+            .setProperty(Blocks.REDSTONE_WIRE, RedstoneWireBlock.POWER, 0));
 
-    public static final ReversableBlockStateConverter MOSS_AFFECTED = register(Util.make(new ReversableBlockStateMap(), a -> {
-        a.replaceBlock(Blocks.MOSSY_COBBLESTONE, Blocks.COBBLESTONE);
-        a.replaceBlock(Blocks.MOSSY_COBBLESTONE_SLAB, Blocks.COBBLESTONE_SLAB);
-        a.replaceBlock(Blocks.MOSSY_COBBLESTONE_STAIRS, Blocks.COBBLESTONE_STAIRS);
-        a.replaceBlock(Blocks.MOSSY_COBBLESTONE_WALL, Blocks.COBBLESTONE_WALL);
-        a.replaceBlock(Blocks.MOSSY_STONE_BRICK_SLAB, Blocks.STONE_BRICK_SLAB);
-        a.replaceBlock(Blocks.MOSSY_STONE_BRICK_STAIRS, Blocks.STONE_BRICK_STAIRS);
-        a.replaceBlock(Blocks.MOSSY_STONE_BRICK_WALL, Blocks.MOSSY_STONE_BRICK_WALL);
-        a.replaceBlock(Blocks.MOSSY_STONE_BRICKS, Blocks.STONE_BRICKS);
-        a.replaceBlock(Blocks.INFESTED_MOSSY_STONE_BRICKS, Blocks.INFESTED_STONE_BRICKS);
-    }), "moss");
+    public static final ReversableBlockStateConverter MOSS_AFFECTED = register("moss", new ReversableBlockStateMap.Builder()
+            .replaceBlock(Blocks.MOSSY_COBBLESTONE, Blocks.COBBLESTONE)
+            .replaceBlock(Blocks.MOSSY_COBBLESTONE_SLAB, Blocks.COBBLESTONE_SLAB)
+            .replaceBlock(Blocks.MOSSY_COBBLESTONE_STAIRS, Blocks.COBBLESTONE_STAIRS)
+            .replaceBlock(Blocks.MOSSY_COBBLESTONE_WALL, Blocks.COBBLESTONE_WALL)
+            .replaceBlock(Blocks.MOSSY_STONE_BRICK_SLAB, Blocks.STONE_BRICK_SLAB)
+            .replaceBlock(Blocks.MOSSY_STONE_BRICK_STAIRS, Blocks.STONE_BRICK_STAIRS)
+            .replaceBlock(Blocks.MOSSY_STONE_BRICK_WALL, Blocks.MOSSY_STONE_BRICK_WALL)
+            .replaceBlock(Blocks.MOSSY_STONE_BRICKS, Blocks.STONE_BRICKS)
+            .replaceBlock(Blocks.INFESTED_MOSSY_STONE_BRICKS, Blocks.INFESTED_STONE_BRICKS));
 
-    public static final BlockStateConverter SILVERFISH_AFFECTED = register(Util.make(new BlockStateMap(), a -> {
-        a.replaceBlock(Blocks.CHISELED_STONE_BRICKS, Blocks.INFESTED_CHISELED_STONE_BRICKS);
-        a.replaceBlock(Blocks.COBBLESTONE, Blocks.INFESTED_COBBLESTONE);
-        a.replaceBlock(Blocks.CRACKED_STONE_BRICKS, Blocks.INFESTED_CRACKED_STONE_BRICKS);
-        a.replaceBlock(Blocks.MOSSY_STONE_BRICKS, Blocks.INFESTED_MOSSY_STONE_BRICKS);
-        a.replaceBlock(Blocks.STONE, Blocks.INFESTED_STONE);
-        a.replaceBlock(Blocks.STONE_BRICKS, Blocks.INFESTED_STONE_BRICKS);
-    }), "infestation");
+    public static final BlockStateConverter SILVERFISH_AFFECTED = register("infestation", new BlockStateMap.Builder()
+            .replaceBlock(Blocks.CHISELED_STONE_BRICKS, Blocks.INFESTED_CHISELED_STONE_BRICKS)
+            .replaceBlock(Blocks.COBBLESTONE, Blocks.INFESTED_COBBLESTONE)
+            .replaceBlock(Blocks.CRACKED_STONE_BRICKS, Blocks.INFESTED_CRACKED_STONE_BRICKS)
+            .replaceBlock(Blocks.MOSSY_STONE_BRICKS, Blocks.INFESTED_MOSSY_STONE_BRICKS)
+            .replaceBlock(Blocks.STONE, Blocks.INFESTED_STONE)
+            .replaceBlock(Blocks.STONE_BRICKS, Blocks.INFESTED_STONE_BRICKS));
 
-    public static final BlockStateConverter FIRE_AFFECTED = register(Util.make(new BlockStateMap(), a -> {
-        a.removeBlock(Blocks.SNOW);
-        a.removeBlock(Blocks.SNOW_BLOCK);
-        a.removeBlock(s -> s.getBlock() instanceof PlantBlock);
-        a.replaceBlock(Blocks.ICE, Blocks.WATER);
-        a.replaceBlock(Blocks.PACKED_ICE, Blocks.WATER);
-        a.replaceBlock(Blocks.CLAY, Blocks.BROWN_CONCRETE);
-        a.replaceBlock(Blocks.OBSIDIAN, Blocks.LAVA);
-        a.replaceBlock(Blocks.GRASS_BLOCK, Blocks.DIRT);
-        a.replaceBlock(Blocks.MOSSY_COBBLESTONE, Blocks.COBBLESTONE);
-        a.replaceBlock(Blocks.MOSSY_COBBLESTONE_WALL, Blocks.COBBLESTONE_WALL);
-        a.replaceBlock(Blocks.MOSSY_STONE_BRICKS, Blocks.STONE_BRICKS);
-        a.replaceBlock(Blocks.INFESTED_MOSSY_STONE_BRICKS, Blocks.INFESTED_STONE_BRICKS);
-        a.replaceBlock(Blocks.PODZOL, Blocks.COARSE_DIRT);
-        a.setProperty(Blocks.FARMLAND, FarmlandBlock.MOISTURE, 0);
-        a.add(StateMapping.build(
-                s -> s.getBlock() == Blocks.DIRT,
-                (w, s) -> (w.random.nextFloat() <= 0.15 ? Blocks.COARSE_DIRT.getDefaultState() : s)));
-    }), "fire");
+    public static final BlockStateConverter FIRE_AFFECTED = register("fire", new BlockStateMap.Builder()
+            .removeBlock(Blocks.SNOW)
+            .removeBlock(Blocks.SNOW_BLOCK)
+            .removeBlock(StateMaps::isPlant)
+            .replaceBlock(Blocks.ICE, Blocks.WATER)
+            .replaceBlock(Blocks.PACKED_ICE, Blocks.WATER)
+            .replaceBlock(Blocks.CLAY, Blocks.BROWN_CONCRETE)
+            .replaceBlock(Blocks.OBSIDIAN, Blocks.LAVA)
+            .replaceBlock(Blocks.GRASS_BLOCK, Blocks.DIRT)
+            .replaceBlock(Blocks.MOSSY_COBBLESTONE, Blocks.COBBLESTONE)
+            .replaceBlock(Blocks.MOSSY_COBBLESTONE_WALL, Blocks.COBBLESTONE_WALL)
+            .replaceBlock(Blocks.MOSSY_STONE_BRICKS, Blocks.STONE_BRICKS)
+            .replaceBlock(Blocks.INFESTED_MOSSY_STONE_BRICKS, Blocks.INFESTED_STONE_BRICKS)
+            .replaceBlock(Blocks.PODZOL, Blocks.COARSE_DIRT)
+            .setProperty(Blocks.FARMLAND, FarmlandBlock.MOISTURE, 0)
+            .add(StateMapping.build(isOf(Blocks.DIRT), (w, s) -> (w.random.nextFloat() <= 0.15 ? Blocks.COARSE_DIRT.getDefaultState() : s))));
 
-    public static final ReversableBlockStateConverter HELLFIRE_AFFECTED = register(Util.make(new ReversableBlockStateMap(), a -> {
-        a.replaceBlock(Blocks.GRASS_BLOCK, Blocks.WARPED_NYLIUM);
-        a.replaceBlock(Blocks.STONE, Blocks.NETHERRACK);
-        a.replaceBlock(Blocks.SAND, Blocks.SOUL_SAND);
-        a.replaceBlock(Blocks.GRAVEL, Blocks.SOUL_SAND);
-        a.replaceBlock(Blocks.DIRT, Blocks.SOUL_SOIL);
-        a.replaceBlock(Blocks.COARSE_DIRT, Blocks.SOUL_SOIL);
-        a.replaceBlock(Blocks.TORCH, Blocks.SOUL_TORCH);
-        a.replaceBlock(Blocks.WALL_TORCH, Blocks.SOUL_WALL_TORCH);
-        a.replaceBlock(Blocks.OAK_LOG, Blocks.WARPED_STEM);
-        a.replaceBlock(Blocks.STRIPPED_OAK_LOG, Blocks.STRIPPED_WARPED_STEM);
-        a.replaceBlock(Blocks.STRIPPED_OAK_WOOD, Blocks.STRIPPED_WARPED_HYPHAE);
-        a.replaceBlock(Blocks.OAK_PLANKS, Blocks.WARPED_PLANKS);
-        a.replaceBlock(Blocks.OAK_DOOR, Blocks.WARPED_DOOR);
-        a.replaceBlock(Blocks.OAK_STAIRS, Blocks.WARPED_STAIRS);
-        a.replaceBlock(Blocks.OAK_TRAPDOOR, Blocks.WARPED_TRAPDOOR);
-        a.replaceBlock(Blocks.OAK_PRESSURE_PLATE, Blocks.WARPED_PRESSURE_PLATE);
-        a.replaceBlock(Blocks.OAK_BUTTON, Blocks.WARPED_BUTTON);
-        a.replaceBlock(Blocks.OAK_FENCE, Blocks.WARPED_FENCE);
-        a.replaceBlock(Blocks.OAK_FENCE_GATE, Blocks.WARPED_FENCE_GATE);
-        a.replaceBlock(BlockTags.LEAVES, Blocks.WARPED_HYPHAE);
-        a.add(StateMapping.build(
-                s -> s.getMaterial() == Material.WATER,
-                (w, s) -> Blocks.OBSIDIAN.getDefaultState(),
-                s -> StateMapping.replaceBlock(Blocks.OBSIDIAN, Blocks.WATER)));
-        a.add(StateMapping.build(
-                s -> s.getBlock() instanceof PlantBlock,
-                (w, s) -> Blocks.NETHER_WART.getDefaultState(),
-                s -> StateMapping.replaceBlock(Blocks.NETHER_WART, Blocks.GRASS)));
-        a.add(StateMapping.build(
-                s -> (s.getBlock() != Blocks.NETHER_QUARTZ_ORE) && (s.getBlock() instanceof OreBlock),
-                (w, s) -> Blocks.NETHER_QUARTZ_ORE.getDefaultState(),
-                s -> StateMapping.replaceBlock(Blocks.NETHER_QUARTZ_ORE, Blocks.COAL_ORE)));
-    }), "hellfire");
+    public static final ReversableBlockStateConverter HELLFIRE_AFFECTED = register("hellfire", new ReversableBlockStateMap.Builder()
+            .replaceBlock(Blocks.GRASS_BLOCK, Blocks.WARPED_NYLIUM)
+            .replaceBlock(Blocks.STONE, Blocks.NETHERRACK)
+            .replaceBlock(Blocks.SAND, Blocks.SOUL_SAND)
+            .replaceBlock(Blocks.GRAVEL, Blocks.SOUL_SAND)
+            .replaceBlock(Blocks.DIRT, Blocks.SOUL_SOIL)
+            .replaceBlock(Blocks.COARSE_DIRT, Blocks.SOUL_SOIL)
+            .replaceBlock(Blocks.TORCH, Blocks.SOUL_TORCH)
+            .replaceBlock(Blocks.WALL_TORCH, Blocks.SOUL_WALL_TORCH)
+            .replaceBlock(Blocks.OAK_LOG, Blocks.WARPED_STEM)
+            .replaceBlock(Blocks.STRIPPED_OAK_LOG, Blocks.STRIPPED_WARPED_STEM)
+            .replaceBlock(Blocks.STRIPPED_OAK_WOOD, Blocks.STRIPPED_WARPED_HYPHAE)
+            .replaceBlock(Blocks.OAK_PLANKS, Blocks.WARPED_PLANKS)
+            .replaceBlock(Blocks.OAK_DOOR, Blocks.WARPED_DOOR)
+            .replaceBlock(Blocks.OAK_STAIRS, Blocks.WARPED_STAIRS)
+            .replaceBlock(Blocks.OAK_TRAPDOOR, Blocks.WARPED_TRAPDOOR)
+            .replaceBlock(Blocks.OAK_PRESSURE_PLATE, Blocks.WARPED_PRESSURE_PLATE)
+            .replaceBlock(Blocks.OAK_BUTTON, Blocks.WARPED_BUTTON)
+            .replaceBlock(Blocks.OAK_FENCE, Blocks.WARPED_FENCE)
+            .replaceBlock(Blocks.OAK_FENCE_GATE, Blocks.WARPED_FENCE_GATE)
+            .replaceBlock(BlockTags.LEAVES, Blocks.WARPED_HYPHAE)
+            .replaceMaterial(Material.WATER, Blocks.OBSIDIAN)
+            .add(StateMapping.build(StateMaps::isPlant, Blocks.NETHER_WART, s -> StateMapping.replaceBlock(Blocks.NETHER_WART, Blocks.GRASS)))
+            .add(StateMapping.build(s -> !s.isOf(Blocks.NETHER_QUARTZ_ORE) && isOre(s), Blocks.NETHER_QUARTZ_ORE, s -> StateMapping.replaceBlock(Blocks.NETHER_QUARTZ_ORE, Blocks.COAL_ORE))));
 
-    private static <T extends BlockStateConverter> T register(T value, String name) {
-        return value;
+    private static <T extends BlockStateConverter> T register(String name, BlockStateMap.Builder value) {
+        return Registry.register(REGISTRY, new Identifier("unicopia", name), value.build());
+    }
+
+    static Predicate<BlockState> isOf(Block block) {
+        return s -> s.isOf(block);
+    }
+    static boolean isPlant(BlockState s) {
+        return s.getBlock() instanceof PlantBlock;
+    }
+    static boolean isOre(BlockState s) {
+        return s.getBlock() instanceof OreBlock;
     }
 }