diff --git a/core/src/main/java/com/volmit/iris/core/tools/IrisBiomeFixer.java b/core/src/main/java/com/volmit/iris/core/tools/IrisBiomeFixer.java
index f6814d30f..059a22131 100644
--- a/core/src/main/java/com/volmit/iris/core/tools/IrisBiomeFixer.java
+++ b/core/src/main/java/com/volmit/iris/core/tools/IrisBiomeFixer.java
@@ -154,7 +154,7 @@ public class IrisBiomeFixer {
                     }
 
                     // Set biomes to the chunk using NMS
-                    INMS.get().setBiomes(cx, cz, engine.getWorld().realWorld(), biomes);
+                    //INMS.get().setBiomes(cx, cz, engine.getWorld().realWorld(), biomes);
 
                     generated.incrementAndGet();
                 }
diff --git a/core/src/main/java/com/volmit/iris/engine/actuator/IrisTerrainNormalActuator.java b/core/src/main/java/com/volmit/iris/engine/actuator/IrisTerrainNormalActuator.java
index 3af2addf4..d385a5f99 100644
--- a/core/src/main/java/com/volmit/iris/engine/actuator/IrisTerrainNormalActuator.java
+++ b/core/src/main/java/com/volmit/iris/engine/actuator/IrisTerrainNormalActuator.java
@@ -18,6 +18,8 @@
 
 package com.volmit.iris.engine.actuator;
 
+import com.volmit.iris.core.nms.IMemoryWorld;
+import com.volmit.iris.core.nms.INMS;
 import com.volmit.iris.engine.framework.Engine;
 import com.volmit.iris.engine.framework.EngineAssignedActuator;
 import com.volmit.iris.engine.object.IrisBiome;
@@ -27,11 +29,13 @@ import com.volmit.iris.util.context.ChunkContext;
 import com.volmit.iris.util.documentation.BlockCoordinates;
 import com.volmit.iris.util.hunk.Hunk;
 import com.volmit.iris.util.math.RNG;
+import com.volmit.iris.util.misc.E;
 import com.volmit.iris.util.scheduling.PrecisionStopwatch;
 import lombok.Getter;
 import org.bukkit.Chunk;
 import org.bukkit.Material;
 import org.bukkit.World;
+import org.bukkit.WorldCreator;
 import org.bukkit.block.Block;
 import org.bukkit.block.data.BlockData;
 import org.bukkit.generator.ChunkGenerator;
@@ -43,6 +47,7 @@ public class IrisTerrainNormalActuator extends EngineAssignedActuator<BlockData>
     private static final BlockData LAVA = Material.LAVA.createBlockData();
     private static final BlockData GLASS = Material.GLASS.createBlockData();
     private static final BlockData CAVE_AIR = Material.CAVE_AIR.createBlockData();
+    private IMemoryWorld memoryWorld;
     @Getter
     private final RNG rng;
     @Getter
@@ -51,12 +56,22 @@ public class IrisTerrainNormalActuator extends EngineAssignedActuator<BlockData>
     public IrisTerrainNormalActuator(Engine engine) {
         super(engine, "Terrain");
         rng = new RNG(engine.getSeedManager().getTerrain());
+        if (memoryWorld != null) {
+            try {
+                this.memoryWorld = INMS.get().createMemoryWorld(new WorldCreator("terrain").generator(getEngine().getDimension().getMerger().getGenerator()));
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
     }
 
     @BlockCoordinates
     @Override
     public void onActuate(int x, int z, Hunk<BlockData> h, boolean multicore, ChunkContext context) {
         PrecisionStopwatch p = PrecisionStopwatch.start();
+        if (memoryWorld != null) {
+            Hunk<BlockData> hm = toHunk(memoryWorld.getChunkData(x,z));
+        }
 
         for (int xf = 0; xf < h.getWidth(); xf++) {
             terrainSliver(x, z, xf, h, context);
@@ -176,6 +191,20 @@ public class IrisTerrainNormalActuator extends EngineAssignedActuator<BlockData>
 
         for (zf = 0; zf < h.getDepth(); zf++) {
 
+
         }
     }
+
+    private Hunk<BlockData> toHunk(ChunkGenerator.ChunkData data) {
+        Hunk<BlockData> h = Hunk.newArrayHunk(16, memoryWorld.getBukkit().getMaxHeight(), 16);
+        for (int x = 0; x < 16; x++) {
+            for (int z = 0; z < 16; z++) {
+                for (int y = 0; y < memoryWorld.getBukkit().getMaxHeight(); y++) {
+                    BlockData block = data.getBlockData(x, y, z);
+                    h.set(x, y, z, block);
+                }
+            }
+        }
+        return h;
+    }
 }
diff --git a/core/src/main/java/com/volmit/iris/engine/framework/Engine.java b/core/src/main/java/com/volmit/iris/engine/framework/Engine.java
index 22c0ed567..fec83b0a5 100644
--- a/core/src/main/java/com/volmit/iris/engine/framework/Engine.java
+++ b/core/src/main/java/com/volmit/iris/engine/framework/Engine.java
@@ -506,7 +506,7 @@ public interface Engine extends DataProvider, Fallible, LootProvider, BlockUpdat
             items.addAll(i.getLoot(debug, rng, slot, world, x, y, z));
         }
 
-        if (PaperLib.isPaper() && getWorld().hasRealWorld()) {
+        if (PaperLib.isPaper() && getWorld().hasRealWorld()) { 
             PaperLib.getChunkAtAsync(getWorld().realWorld(), x >> 4, z >> 4).thenAccept((c) -> {
                 Runnable r = () -> {
                     for (ItemStack i : items) {
diff --git a/core/src/main/java/com/volmit/iris/engine/object/IrisDimension.java b/core/src/main/java/com/volmit/iris/engine/object/IrisDimension.java
index 846429bd8..6f18e3b6a 100644
--- a/core/src/main/java/com/volmit/iris/engine/object/IrisDimension.java
+++ b/core/src/main/java/com/volmit/iris/engine/object/IrisDimension.java
@@ -144,6 +144,8 @@ public class IrisDimension extends IrisRegistrant {
     @RegistryListResource(IrisJigsawStructure.class)
     @Desc("If defined, Iris will place the given jigsaw structure where minecraft should place the overworld stronghold.")
     private String stronghold;
+    @Desc("Iris merger")
+    private IrisMerger merger = new IrisMerger();
     @Desc("If set to true, Iris will remove chunks to allow visualizing cross sections of chunks easily")
     private boolean debugChunkCrossSections = false;
     @Desc("Vertically split up the biome palettes with 3 air blocks in between to visualize them")