diff --git a/src/main/java/com/volmit/iris/Iris.java b/src/main/java/com/volmit/iris/Iris.java
index 5ac77569f..7424cf3e4 100644
--- a/src/main/java/com/volmit/iris/Iris.java
+++ b/src/main/java/com/volmit/iris/Iris.java
@@ -387,6 +387,8 @@ public class Iris extends VolmitPlugin implements Listener {
     }
 
     private void enable() {
+        IrisToolbelt.retainMantleDataForSlice(String.class.getCanonicalName());
+        IrisToolbelt.retainMantleDataForSlice(BlockData.class.getCanonicalName());
         instance = this;
         services = new KMap<>();
         initialize("com.volmit.iris.core.service").forEach((i) -> services.put((Class<? extends IrisService>) i.getClass(), (IrisService) i));
@@ -414,8 +416,6 @@ public class Iris extends VolmitPlugin implements Listener {
             splash();
             autoStartStudio();
             checkForBukkitWorlds();
-            IrisToolbelt.retainMantleDataForSlice(String.class.getCanonicalName());
-            IrisToolbelt.retainMantleDataForSlice(BlockData.class.getCanonicalName());
         });
     }
 
diff --git a/src/main/java/com/volmit/iris/core/commands/CommandWhat.java b/src/main/java/com/volmit/iris/core/commands/CommandWhat.java
index 9423ed3c5..4b06f8c76 100644
--- a/src/main/java/com/volmit/iris/core/commands/CommandWhat.java
+++ b/src/main/java/com/volmit/iris/core/commands/CommandWhat.java
@@ -65,7 +65,7 @@ public class CommandWhat implements DecreeExecutor {
     @Decree(description = "What biome am i in?", origin = DecreeOrigin.PLAYER)
     public void biome() {
         try {
-            IrisBiome b = engine().getBiome(player().getLocation().getBlockX(), player().getLocation().getBlockY(), player().getLocation().getBlockZ());
+            IrisBiome b = engine().getBiome(player().getLocation().getBlockX(), player().getLocation().getBlockY() - player().getWorld().getMinHeight(), player().getLocation().getBlockZ());
             sender().sendMessage("IBiome: " + b.getLoadKey() + " (" + b.getDerivative().name() + ")");
 
         } catch(Throwable e) {
diff --git a/src/main/java/com/volmit/iris/engine/IrisWorldManager.java b/src/main/java/com/volmit/iris/engine/IrisWorldManager.java
index 9e3b9b6a3..d0da5d79d 100644
--- a/src/main/java/com/volmit/iris/engine/IrisWorldManager.java
+++ b/src/main/java/com/volmit/iris/engine/IrisWorldManager.java
@@ -20,20 +20,10 @@ package com.volmit.iris.engine;
 
 import com.volmit.iris.Iris;
 import com.volmit.iris.core.IrisSettings;
-import com.volmit.iris.engine.data.cache.Cache;
+import com.volmit.iris.core.loader.IrisData;
 import com.volmit.iris.engine.framework.Engine;
 import com.volmit.iris.engine.framework.EngineAssignedWorldManager;
-import com.volmit.iris.engine.object.IRare;
-import com.volmit.iris.engine.object.IrisBiome;
-import com.volmit.iris.engine.object.IrisBlockDrops;
-import com.volmit.iris.engine.object.IrisEngineChunkData;
-import com.volmit.iris.engine.object.IrisEngineData;
-import com.volmit.iris.engine.object.IrisEngineSpawnerCooldown;
-import com.volmit.iris.engine.object.IrisEntitySpawn;
-import com.volmit.iris.engine.object.IrisMarker;
-import com.volmit.iris.engine.object.IrisPosition;
-import com.volmit.iris.engine.object.IrisRegion;
-import com.volmit.iris.engine.object.IrisSpawner;
+import com.volmit.iris.engine.object.*;
 import com.volmit.iris.util.collection.KList;
 import com.volmit.iris.util.collection.KMap;
 import com.volmit.iris.util.collection.KSet;
@@ -55,6 +45,7 @@ import lombok.Data;
 import lombok.EqualsAndHashCode;
 import org.bukkit.Chunk;
 import org.bukkit.Location;
+import org.bukkit.World;
 import org.bukkit.entity.Entity;
 import org.bukkit.entity.LivingEntity;
 import org.bukkit.entity.Player;
@@ -69,7 +60,6 @@ import java.util.Set;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Future;
-import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
@@ -617,7 +607,6 @@ public class IrisWorldManager extends EngineAssignedWorldManager {
     @Override
     public void onBlockBreak(BlockBreakEvent e) {
         if(e.getBlock().getWorld().equals(getTarget().getWorld().realWorld())) {
-
             J.a(() -> {
                 MatterMarker marker = getMantle().get(e.getBlock().getX(), e.getBlock().getY(), e.getBlock().getZ(), MatterMarker.class);
 
@@ -635,52 +624,30 @@ public class IrisWorldManager extends EngineAssignedWorldManager {
             });
 
             KList<ItemStack> d = new KList<>();
-            Runnable drop = () -> J.s(() -> d.forEach((i) -> e.getBlock().getWorld().dropItemNaturally(e.getBlock().getLocation().clone().add(0.5, 0.5, 0.5), i)));
             IrisBiome b = getEngine().getBiome(e.getBlock().getLocation());
+            List<IrisBlockDrops> dropProviders = filterDrops(b.getBlockDrops(), e, getData());
 
-            if(dropItems(e, d, drop, b.getBlockDrops(), b)) {
-                return;
+            if(dropProviders.stream().noneMatch(IrisBlockDrops::isSkipParents)) {
+                IrisRegion r = getEngine().getRegion(e.getBlock().getLocation());
+                dropProviders.addAll(filterDrops(r.getBlockDrops(), e, getData()));
+                dropProviders.addAll(filterDrops(getEngine().getDimension().getBlockDrops(), e, getData()));
             }
 
-            IrisRegion r = getEngine().getRegion(e.getBlock().getLocation());
+            dropProviders.forEach(provider -> provider.fillDrops(false, d));
 
-            if(dropItems(e, d, drop, r.getBlockDrops(), b)) {
-                return;
+            if(dropProviders.stream().anyMatch(IrisBlockDrops::isReplaceVanillaDrops)) {
+                e.setDropItems(false);
             }
 
-            for(IrisBlockDrops i : getEngine().getDimension().getBlockDrops()) {
-                if(i.shouldDropFor(e.getBlock().getBlockData(), getData())) {
-                    if(i.isReplaceVanillaDrops()) {
-                        e.setDropItems(false);
-                    }
-
-                    i.fillDrops(false, d);
-
-                    if(i.isSkipParents()) {
-                        drop.run();
-                        return;
-                    }
-                }
+            if(d.isNotEmpty()) {
+                World w = e.getBlock().getWorld();
+                J.s(() -> d.forEach(item -> w.dropItemNaturally(e.getBlock().getLocation().clone().add(.5, .5, .5), item)));
             }
         }
     }
 
-    private boolean dropItems(BlockBreakEvent e, KList<ItemStack> d, Runnable drop, KList<IrisBlockDrops> blockDrops, IrisBiome b) {
-        for(IrisBlockDrops i : blockDrops) {
-            if(i.shouldDropFor(e.getBlock().getBlockData(), getData())) {
-                if(i.isReplaceVanillaDrops()) {
-                    e.setDropItems(false);
-                }
-
-                i.fillDrops(false, d);
-
-                if(i.isSkipParents()) {
-                    drop.run();
-                    return true;
-                }
-            }
-        }
-        return false;
+    private List<IrisBlockDrops> filterDrops(KList<IrisBlockDrops> drops, BlockBreakEvent e, IrisData data) {
+        return new KList<>(drops.stream().filter(d -> d.shouldDropFor(e.getBlock().getBlockData(), data)).toList());
     }
 
     @Override
diff --git a/src/main/java/com/volmit/iris/engine/object/IrisBlockDrops.java b/src/main/java/com/volmit/iris/engine/object/IrisBlockDrops.java
index 9ef567271..6b3be8d59 100644
--- a/src/main/java/com/volmit/iris/engine/object/IrisBlockDrops.java
+++ b/src/main/java/com/volmit/iris/engine/object/IrisBlockDrops.java
@@ -56,8 +56,7 @@ public class IrisBlockDrops {
     private boolean replaceVanillaDrops = false;
 
     public boolean shouldDropFor(BlockData data, IrisData rdata) {
-        KList<BlockData> list = this.data.aquire(() ->
-        {
+        KList<BlockData> list = this.data.aquire(() -> {
             KList<BlockData> b = new KList<>();
 
             for(IrisBlockData i : getBlocks()) {
diff --git a/src/main/java/com/volmit/iris/util/mantle/Mantle.java b/src/main/java/com/volmit/iris/util/mantle/Mantle.java
index e08222ed8..8ad73f95a 100644
--- a/src/main/java/com/volmit/iris/util/mantle/Mantle.java
+++ b/src/main/java/com/volmit/iris/util/mantle/Mantle.java
@@ -579,8 +579,7 @@ public class Mantle {
     }
 
     public void deleteChunkSlice(int x, int z, Class<?> c) {
-        if(!IrisToolbelt.toolbeltConfiguration.isEmpty() && IrisToolbelt.toolbeltConfiguration.getOrDefault("retain.mantle." + c.getCanonicalName(), false))
-        {
+        if(!IrisToolbelt.toolbeltConfiguration.isEmpty() && IrisToolbelt.toolbeltConfiguration.getOrDefault("retain.mantle." + c.getCanonicalName(), false)) {
             return;
         }