diff --git a/paper-server/nms-patches/net/minecraft/world/entity/monster/warden/Warden.patch b/paper-server/nms-patches/net/minecraft/world/entity/monster/warden/Warden.patch
new file mode 100644
index 0000000000..ea698caee0
--- /dev/null
+++ b/paper-server/nms-patches/net/minecraft/world/entity/monster/warden/Warden.patch
@@ -0,0 +1,63 @@
+--- a/net/minecraft/world/entity/monster/warden/Warden.java
++++ b/net/minecraft/world/entity/monster/warden/Warden.java
+@@ -370,7 +370,7 @@
+ 
+     @Override
+     public BehaviorController<Warden> getBrain() {
+-        return super.getBrain();
++        return (BehaviorController<Warden>) super.getBrain(); // CraftBukkit - decompile error
+     }
+ 
+     @Override
+@@ -421,13 +421,13 @@
+     public static void applyDarknessAround(WorldServer worldserver, Vec3D vec3d, @Nullable Entity entity, int i) {
+         MobEffect mobeffect = new MobEffect(MobEffects.DARKNESS, 260, 0, false, false);
+ 
+-        MobEffectUtil.addEffectToPlayersAround(worldserver, entity, vec3d, (double) i, mobeffect, 200);
++        MobEffectUtil.addEffectToPlayersAround(worldserver, entity, vec3d, i, mobeffect, 200, org.bukkit.event.entity.EntityPotionEffectEvent.Cause.WARDEN); // CraftBukkit - Add EntityPotionEffectEvent.Cause
+     }
+ 
+     @Override
+     public void addAdditionalSaveData(NBTTagCompound nbttagcompound) {
+         super.addAdditionalSaveData(nbttagcompound);
+-        DataResult dataresult = AngerManagement.codec(this::canTargetEntity).encodeStart(DynamicOpsNBT.INSTANCE, this.angerManagement);
++        DataResult<net.minecraft.nbt.NBTBase> dataresult = AngerManagement.codec(this::canTargetEntity).encodeStart(DynamicOpsNBT.INSTANCE, this.angerManagement); // CraftBukkit - decompile error
+         Logger logger = Warden.LOGGER;
+ 
+         Objects.requireNonNull(logger);
+@@ -452,7 +452,7 @@
+             dataresult = AngerManagement.codec(this::canTargetEntity).parse(new Dynamic(DynamicOpsNBT.INSTANCE, nbttagcompound.get("anger")));
+             logger = Warden.LOGGER;
+             Objects.requireNonNull(logger);
+-            dataresult.resultOrPartial(logger::error).ifPresent((angermanagement) -> {
++            ((DataResult<AngerManagement>) dataresult).resultOrPartial(logger::error).ifPresent((angermanagement) -> { // CraftBukkit - decompile error
+                 this.angerManagement = angermanagement;
+             });
+             this.syncClientAngerLevel();
+@@ -462,7 +462,7 @@
+             dataresult = VibrationListener.codec(this).parse(new Dynamic(DynamicOpsNBT.INSTANCE, nbttagcompound.getCompound("listener")));
+             logger = Warden.LOGGER;
+             Objects.requireNonNull(logger);
+-            dataresult.resultOrPartial(logger::error).ifPresent((vibrationlistener) -> {
++            ((DataResult<VibrationListener>) dataresult).resultOrPartial(logger::error).ifPresent((vibrationlistener) -> { // CraftBukkit - decompile error
+                 this.dynamicGameEventListener.updateListener(vibrationlistener, this.level);
+             });
+         }
+@@ -496,7 +496,7 @@
+     public void increaseAngerAt(@Nullable Entity entity, int i, boolean flag) {
+         if (!this.isNoAi() && this.canTargetEntity(entity)) {
+             WardenAi.setDigCooldown(this);
+-            boolean flag1 = !(this.getBrain().getMemory(MemoryModuleType.ATTACK_TARGET).orElse((Object) null) instanceof EntityHuman);
++            boolean flag1 = !(this.getBrain().getMemory(MemoryModuleType.ATTACK_TARGET).orElse(null) instanceof EntityHuman); // CraftBukkit - decompile error
+             int j = this.angerManagement.increaseAnger(entity, i);
+ 
+             if (entity instanceof EntityHuman && flag1 && AngerLevel.byAnger(j).isAngry()) {
+@@ -517,7 +517,7 @@
+     @Nullable
+     @Override
+     public EntityLiving getTarget() {
+-        return (EntityLiving) this.getBrain().getMemory(MemoryModuleType.ATTACK_TARGET).orElse((Object) null);
++        return (EntityLiving) this.getBrain().getMemory(MemoryModuleType.ATTACK_TARGET).orElse(null); // CraftBukkit - decompile error
+     }
+ 
+     @Override
diff --git a/paper-server/pom.xml b/paper-server/pom.xml
index 9aa776c935..1ee34196ce 100644
--- a/paper-server/pom.xml
+++ b/paper-server/pom.xml
@@ -255,6 +255,13 @@
             <version>1.7.3</version>
             <scope>runtime</scope>
         </dependency>
+        <!-- annotations -->
+        <dependency>
+            <groupId>org.jetbrains</groupId>
+            <artifactId>annotations-java5</artifactId>
+            <version>23.0.0</version>
+            <scope>provided</scope>
+        </dependency>
         <!-- testing -->
         <dependency>
             <groupId>junit</groupId>