diff --git a/src/main/java/carpet/CarpetServer.java b/src/main/java/carpet/CarpetServer.java
index d63c27e5..930ddff6 100644
--- a/src/main/java/carpet/CarpetServer.java
+++ b/src/main/java/carpet/CarpetServer.java
@@ -20,6 +20,7 @@ import carpet.commands.TestCommand;
 import carpet.commands.TickCommand;
 import carpet.network.ServerNetworkHandler;
 import carpet.helpers.HopperCounter;
+import carpet.helpers.ParticleDisplay;
 import carpet.helpers.TickSpeed;
 import carpet.logging.LoggerRegistry;
 import carpet.script.CarpetScriptServer;
@@ -194,6 +195,7 @@ public class CarpetServer // static for now - easier to handle all around the co
 
             LoggerRegistry.stopLoggers();
             HUDController.resetScarpetHUDs();
+            ParticleDisplay.resetCache();
             extensions.forEach(e -> e.onServerClosed(server));
             minecraft_server = null;
         }
diff --git a/src/main/java/carpet/helpers/ParticleDisplay.java b/src/main/java/carpet/helpers/ParticleDisplay.java
index 5cc0b5db..086a8c23 100644
--- a/src/main/java/carpet/helpers/ParticleDisplay.java
+++ b/src/main/java/carpet/helpers/ParticleDisplay.java
@@ -5,42 +5,45 @@ import com.mojang.brigadier.exceptions.CommandSyntaxException;
 import java.util.HashMap;
 import java.util.Map;
 import net.minecraft.commands.arguments.ParticleArgument;
+import net.minecraft.core.HolderLookup;
 import net.minecraft.core.particles.ParticleOptions;
+import net.minecraft.core.particles.ParticleType;
 import net.minecraft.core.registries.Registries;
-import net.minecraft.server.level.ServerLevel;
 import net.minecraft.server.level.ServerPlayer;
 import net.minecraft.world.phys.Vec3;
 
 public class ParticleDisplay
 {
-    private static Map<String, ParticleOptions> particleCache = new HashMap<>();
+    private static final Map<String, ParticleOptions> particleCache = new HashMap<>(); // we reset this on reloads, but probably need something better
 
-    private static ParticleOptions parseParticle(String name, ServerLevel level)  // [SCARY SHIT] persistent caches over server reloads
+    private static ParticleOptions parseParticle(String name, HolderLookup<ParticleType<?>> lookup)
     {
         try
         {
-            return ParticleArgument.readParticle(new StringReader(name), level.holderLookup(Registries.PARTICLE_TYPE));
+            return ParticleArgument.readParticle(new StringReader(name), lookup);
         }
         catch (CommandSyntaxException e)
         {
-            throw new RuntimeException("No such particle: "+name);
+            throw new IllegalArgumentException("No such particle: " + name);
         }
     }
-    public static ParticleOptions getEffect(String name, ServerLevel level)
+    public static ParticleOptions getEffect(String name, HolderLookup<ParticleType<?>> lookup)
     {
         if (name == null) return null;
-        ParticleOptions res = particleCache.get(name);
-        if (res != null) return res;
-        particleCache.put(name, parseParticle(name, level));
-        return particleCache.get(name);
+        return particleCache.computeIfAbsent(name, particle -> parseParticle(particle, lookup));
+    }
+
+    public static void resetCache() {
+        particleCache.clear();
     }
 
     public static void drawParticleLine(ServerPlayer player, Vec3 from, Vec3 to, String main, String accent, int count, double spread)
     {
-        ParticleOptions accentParticle = getEffect(accent, player.getLevel());
-        ParticleOptions mainParticle = getEffect(main, player.getLevel());
+        HolderLookup<ParticleType<?>> lookup = player.getLevel().holderLookup(Registries.PARTICLE_TYPE);
+        ParticleOptions accentParticle = getEffect(accent, lookup);
+        ParticleOptions mainParticle = getEffect(main, lookup);
 
-        if (accentParticle != null) ((ServerLevel)player.level).sendParticles(
+        if (accentParticle != null) player.getLevel().sendParticles(
                 player,
                 accentParticle,
                 true,
@@ -52,10 +55,10 @@ public class ParticleDisplay
 
         Vec3 incvec = to.subtract(from).normalize();//    multiply(50/sqrt(lineLengthSq));
         for (Vec3 delta = new Vec3(0.0,0.0,0.0);
-             delta.lengthSqr()<lineLengthSq;
+             delta.lengthSqr() < lineLengthSq;
              delta = delta.add(incvec.scale(player.level.random.nextFloat())))
         {
-            ((ServerLevel)player.level).sendParticles(
+            player.getLevel().sendParticles(
                     player,
                     mainParticle,
                     true,
diff --git a/src/main/java/carpet/script/utils/ShapeDispatcher.java b/src/main/java/carpet/script/utils/ShapeDispatcher.java
index 724e9639..601631e5 100644
--- a/src/main/java/carpet/script/utils/ShapeDispatcher.java
+++ b/src/main/java/carpet/script/utils/ShapeDispatcher.java
@@ -1,6 +1,7 @@
 package carpet.script.utils;
 
 import carpet.CarpetSettings;
+import carpet.helpers.ParticleDisplay;
 import carpet.network.ServerNetworkHandler;
 import carpet.script.exception.InternalExpressionException;
 import carpet.script.exception.ThrowStatement;
@@ -23,16 +24,11 @@ import carpet.script.value.ValueConversions;
 import com.google.common.collect.Sets;
 import com.mojang.blaze3d.vertex.VertexFormat;
 import com.mojang.blaze3d.vertex.VertexFormat.Mode;
-import com.mojang.brigadier.StringReader;
-import com.mojang.brigadier.exceptions.CommandSyntaxException;
-
-import net.minecraft.commands.arguments.ParticleArgument;
 import net.minecraft.core.BlockPos;
 import net.minecraft.core.Direction;
 import net.minecraft.core.Registry;
 import net.minecraft.core.RegistryAccess;
 import net.minecraft.core.particles.ParticleOptions;
-import net.minecraft.core.registries.BuiltInRegistries;
 import net.minecraft.core.registries.Registries;
 import net.minecraft.nbt.ByteTag;
 import net.minecraft.nbt.CompoundTag;
@@ -70,14 +66,12 @@ import java.util.Random;
 import java.util.Set;
 import java.util.function.BiFunction;
 import java.util.function.Consumer;
-import java.util.function.Function;
 import java.util.function.Supplier;
 
 import static java.util.Map.entry;
 
 public class ShapeDispatcher
 {
-    private static final Map<String, ParticleOptions> particleCache = new HashMap<>();
     public static record ShapeWithConfig(ExpiringShape shape, Map<String, Value> config) {}
 
     public static ShapeWithConfig fromFunctionArgs(
@@ -177,19 +171,14 @@ public class ShapeDispatcher
 
     public static ParticleOptions getParticleData(String name, RegistryAccess regs)
     {
-        ParticleOptions particle = particleCache.get(name); // [SCARY SHIT] cache should be cleared between worlds
-        if (particle != null)
-            return particle;
         try
         {
-            particle = ParticleArgument.readParticle(new StringReader(name), regs.lookupOrThrow(Registries.PARTICLE_TYPE));
+            return ParticleDisplay.getEffect(name, regs.lookupOrThrow(Registries.PARTICLE_TYPE));
         }
-        catch (CommandSyntaxException e)
+        catch (IllegalArgumentException e)
         {
             throw new ThrowStatement(name, Throwables.UNKNOWN_PARTICLE);
         }
-        particleCache.put(name, particle);
-        return particle;
     }
 
     public static Map<String, Value> parseParams(List<Value> items)
@@ -261,7 +250,7 @@ public class ShapeDispatcher
 
     public abstract static class ExpiringShape
     {
-        public static final Map<String, BiFunction<Map<String, Value>, RegistryAccess, ExpiringShape>> shapeProviders = new HashMap<String, BiFunction<Map<String, Value>, RegistryAccess, ExpiringShape>>(){{
+        public static final Map<String, BiFunction<Map<String, Value>, RegistryAccess, ExpiringShape>> shapeProviders = new HashMap<>(){{
             put("line", creator(Line::new));
             put("box", creator(Box::new));
             put("sphere", creator(Sphere::new));
@@ -1200,7 +1189,7 @@ public class ShapeDispatcher
                     "GROUND",
                     "FIXED")
                     {
-                        public Value validate(Map o, MinecraftServer s, Value v)
+                        public Value validate(Map<String, Value> o, MinecraftServer s, Value v)
                         {
                             return super.validate(o, s ,new StringValue(v.getString().toUpperCase(Locale.ROOT)));
                         }