diff --git a/src/main/java/com/minelittlepony/unicopia/Owned.java b/src/main/java/com/minelittlepony/unicopia/Owned.java
index 1ff04421..d2235c2f 100644
--- a/src/main/java/com/minelittlepony/unicopia/Owned.java
+++ b/src/main/java/com/minelittlepony/unicopia/Owned.java
@@ -21,16 +21,6 @@ public interface Owned<E extends Entity> {
     @Nullable
     E getMaster();
 
-    /**
-     * Gets the unique entity id of the entity that holds this object.
-     * <p>
-     * Since {@link Owned#getMaster()} will only return if the owner is loaded, use this to perform checks
-     * in the owner's absence.
-     */
-    default Optional<UUID> getMasterId() {
-        return Optional.of(getMaster()).map(Entity::getUuid);
-    }
-
     /**
      * Updates the owner of this object.
      */
@@ -45,6 +35,20 @@ public interface Owned<E extends Entity> {
         setMaster(sibling.getMaster());
     }
 
+    default boolean hasMaster() {
+        return getMaster() != null;
+    }
+
+    /**
+     * Gets the unique entity id of the entity that holds this object.
+     * <p>
+     * Since {@link Owned#getMaster()} will only return if the owner is loaded, use this to perform checks
+     * in the owner's absence.
+     */
+    default Optional<UUID> getMasterId() {
+        return Optional.of(getMaster()).map(Entity::getUuid);
+    }
+
     default boolean isOwnedBy(@Nullable Object owner) {
         return owner instanceof Entity e
                 && getMasterId().isPresent()
diff --git a/src/main/java/com/minelittlepony/unicopia/WeaklyOwned.java b/src/main/java/com/minelittlepony/unicopia/WeaklyOwned.java
index 8fb178c5..e6aa0aef 100644
--- a/src/main/java/com/minelittlepony/unicopia/WeaklyOwned.java
+++ b/src/main/java/com/minelittlepony/unicopia/WeaklyOwned.java
@@ -35,6 +35,11 @@ public interface WeaklyOwned<E extends Entity> extends Owned<E> {
         }
     }
 
+    @Override
+    default void setMaster(E master) {
+        getMasterReference().set(master);
+    }
+
     default World getReferenceWorld() {
         return ((Entity)this).getEntityWorld();
     }
@@ -45,11 +50,6 @@ public interface WeaklyOwned<E extends Entity> extends Owned<E> {
         return getMasterReference().get(getReferenceWorld());
     }
 
-    @Override
-    default void setMaster(E master) {
-        getMasterReference().set(master);
-    }
-
     @Override
     default Optional<UUID> getMasterId() {
         return getMasterReference().getId();
diff --git a/src/main/java/com/minelittlepony/unicopia/client/render/WorldRenderDelegate.java b/src/main/java/com/minelittlepony/unicopia/client/render/WorldRenderDelegate.java
index 96814854..e9fcd661 100644
--- a/src/main/java/com/minelittlepony/unicopia/client/render/WorldRenderDelegate.java
+++ b/src/main/java/com/minelittlepony/unicopia/client/render/WorldRenderDelegate.java
@@ -87,7 +87,7 @@ public class WorldRenderDelegate {
             matrices.push();
 
             if (pony.getPhysics().isGravityNegative()) {
-                matrices.translate(0, -((ItemImpl) pony).getMaster().getHeight() * 1.1, 0);
+                matrices.translate(0, -((ItemImpl) pony).asEntity().getHeight() * 1.1, 0);
             }
 
             return false;
diff --git a/src/main/java/com/minelittlepony/unicopia/entity/CastSpellEntity.java b/src/main/java/com/minelittlepony/unicopia/entity/CastSpellEntity.java
index 35f96bec..d2f5df90 100644
--- a/src/main/java/com/minelittlepony/unicopia/entity/CastSpellEntity.java
+++ b/src/main/java/com/minelittlepony/unicopia/entity/CastSpellEntity.java
@@ -77,6 +77,11 @@ public class CastSpellEntity extends LightEmittingEntity implements Caster<Livin
         return owner;
     }
 
+    @Override
+    public World getReferenceWorld() {
+        return WeaklyOwned.super.getReferenceWorld();
+    }
+
     @Override
     public Entity getEntity() {
         return this;
@@ -150,9 +155,4 @@ public class CastSpellEntity extends LightEmittingEntity implements Caster<Livin
     public Packet<ClientPlayPacketListener> createSpawnPacket() {
         return Channel.SERVER_SPAWN_PROJECTILE.toPacket(new MsgSpawnProjectile(this));
     }
-
-    @Override
-    public World getReferenceWorld() {
-        return WeaklyOwned.super.getReferenceWorld();
-    }
 }
diff --git a/src/main/java/com/minelittlepony/unicopia/entity/Creature.java b/src/main/java/com/minelittlepony/unicopia/entity/Creature.java
index c76490b8..72440c39 100644
--- a/src/main/java/com/minelittlepony/unicopia/entity/Creature.java
+++ b/src/main/java/com/minelittlepony/unicopia/entity/Creature.java
@@ -44,7 +44,7 @@ public class Creature extends Living<LivingEntity> implements WeaklyOwned<Living
 
     private final EntityPhysics<LivingEntity> physics;
 
-    private final EntityReference<LivingEntity> master = new EntityReference<>();
+    private final EntityReference<LivingEntity> owner = new EntityReference<>();
 
     @Nullable
     private GoalSelector goals;
@@ -58,21 +58,21 @@ public class Creature extends Living<LivingEntity> implements WeaklyOwned<Living
     public Creature(LivingEntity entity) {
         super(entity, EFFECT);
         physics = new EntityPhysics<>(entity, GRAVITY);
-        entity.getDataTracker().startTracking(MASTER, master.toNBT());
+        entity.getDataTracker().startTracking(MASTER, owner.toNBT());
         entity.getDataTracker().startTracking(EATING, 0);
     }
 
     @Override
     public void setMaster(LivingEntity owner) {
-        master.set(owner);
-        entity.getDataTracker().set(MASTER, master.toNBT());
+        this.owner.set(owner);
+        entity.getDataTracker().set(MASTER, this.owner.toNBT());
         if (targets != null && owner != null) {
             initMinionAi();
         }
     }
 
     public boolean isMinion() {
-        return master.getId().isPresent();
+        return owner.getId().isPresent();
     }
 
     @Override
@@ -84,13 +84,13 @@ public class Creature extends Living<LivingEntity> implements WeaklyOwned<Living
     @NotNull
     public LivingEntity getMaster() {
         NbtCompound data = entity.getDataTracker().get(MASTER);
-        master.fromNBT(data);
-        return master.getOrEmpty(getReferenceWorld()).orElse(entity);
+        owner.fromNBT(data);
+        return owner.getOrEmpty(getReferenceWorld()).orElse(entity);
     }
 
     @Override
     public EntityReference<LivingEntity> getMasterReference() {
-        return master;
+        return owner;
     }
 
     public Optional<GoalSelector> getTargets() {
@@ -116,7 +116,7 @@ public class Creature extends Living<LivingEntity> implements WeaklyOwned<Living
             goals.add(3, eatMuffinGoal);
         }
 
-        if (master.isPresent(getReferenceWorld())) {
+        if (owner.isPresent(getReferenceWorld())) {
             initMinionAi();
         }
 
@@ -229,7 +229,7 @@ public class Creature extends Living<LivingEntity> implements WeaklyOwned<Living
         getSpellSlot().get(true).ifPresent(effect -> {
             compound.put("effect", Spell.writeNbt(effect));
         });
-        compound.put("master", master.toNBT());
+        compound.put("master", owner.toNBT());
         physics.toNBT(compound);
     }
 
@@ -240,8 +240,8 @@ public class Creature extends Living<LivingEntity> implements WeaklyOwned<Living
             getSpellSlot().put(Spell.readNbt(compound.getCompound("effect")));
         }
         if (compound.contains("master", NbtElement.COMPOUND_TYPE)) {
-            master.fromNBT(compound.getCompound("master"));
-            if (master.isPresent(getReferenceWorld()) && targets != null) {
+            owner.fromNBT(compound.getCompound("master"));
+            if (owner.isPresent(getReferenceWorld()) && targets != null) {
                 initMinionAi();
             }
         }
diff --git a/src/main/java/com/minelittlepony/unicopia/entity/ItemImpl.java b/src/main/java/com/minelittlepony/unicopia/entity/ItemImpl.java
index f0f9e4ef..bc326d5d 100644
--- a/src/main/java/com/minelittlepony/unicopia/entity/ItemImpl.java
+++ b/src/main/java/com/minelittlepony/unicopia/entity/ItemImpl.java
@@ -2,18 +2,12 @@ package com.minelittlepony.unicopia.entity;
 
 import java.util.List;
 
-import org.jetbrains.annotations.NotNull;
-
-import com.minelittlepony.unicopia.Owned;
-import com.minelittlepony.unicopia.Race;
-import com.minelittlepony.unicopia.UTags;
+import com.minelittlepony.unicopia.*;
 import com.minelittlepony.unicopia.item.enchantment.UEnchantments;
 import com.minelittlepony.unicopia.util.VecHelper;
 
 import net.minecraft.enchantment.EnchantmentHelper;
-import net.minecraft.entity.Entity;
-import net.minecraft.entity.ItemEntity;
-import net.minecraft.entity.MovementType;
+import net.minecraft.entity.*;
 import net.minecraft.entity.data.DataTracker;
 import net.minecraft.entity.data.TrackedData;
 import net.minecraft.entity.data.TrackedDataHandlerRegistry;
@@ -28,7 +22,7 @@ import net.minecraft.util.ActionResult;
 import net.minecraft.util.math.Vec3d;
 import net.minecraft.util.math.random.Random;
 
-public class ItemImpl implements Equine<ItemEntity>, Owned<ItemEntity> {
+public class ItemImpl implements Equine<ItemEntity> {
     private static final TrackedData<String> ITEM_RACE = DataTracker.registerData(ItemEntity.class, TrackedDataHandlerRegistry.STRING);
     static final TrackedData<Float> ITEM_GRAVITY = DataTracker.registerData(ItemEntity.class, TrackedDataHandlerRegistry.FLOAT);
 
@@ -158,17 +152,6 @@ public class ItemImpl implements Equine<ItemEntity>, Owned<ItemEntity> {
         physics.fromNBT(compound);
     }
 
-    @Override
-    public void setMaster(ItemEntity owner) {
-
-    }
-
-    @Override
-    @NotNull
-    public ItemEntity getMaster() {
-        return asEntity();
-    }
-
     @Override
     public ItemEntity asEntity() {
         return entity;
@@ -215,11 +198,11 @@ public class ItemImpl implements Equine<ItemEntity>, Owned<ItemEntity> {
         }
 
         default float getFollowDistance(IItemEntity entity) {
-            return 6 * (1 + EnchantmentHelper.getLevel(UEnchantments.CLINGY, entity.get().getMaster().getStack()));
+            return 6 * (1 + EnchantmentHelper.getLevel(UEnchantments.CLINGY, entity.get().asEntity().getStack()));
         }
 
         default float getFollowSpeed(IItemEntity entity) {
-            return Math.min(1, 0.02F * (1 + EnchantmentHelper.getLevel(UEnchantments.CLINGY, entity.get().getMaster().getStack())));
+            return Math.min(1, 0.02F * (1 + EnchantmentHelper.getLevel(UEnchantments.CLINGY, entity.get().asEntity().getStack())));
         }
 
         default void interactWithPlayer(IItemEntity entity, PlayerEntity player) {
diff --git a/src/main/java/com/minelittlepony/unicopia/entity/Living.java b/src/main/java/com/minelittlepony/unicopia/entity/Living.java
index 4806e3bd..b1e32795 100644
--- a/src/main/java/com/minelittlepony/unicopia/entity/Living.java
+++ b/src/main/java/com/minelittlepony/unicopia/entity/Living.java
@@ -4,7 +4,6 @@ import java.util.Optional;
 import java.util.stream.Stream;
 import java.util.stream.StreamSupport;
 
-import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import com.minelittlepony.unicopia.USounds;
@@ -99,16 +98,6 @@ public abstract class Living<T extends LivingEntity> implements Equine<T>, Caste
         return armour;
     }
 
-    @Override
-    public void setMaster(LivingEntity owner) {
-    }
-
-    @Override
-    @NotNull
-    public LivingEntity getMaster() {
-        return asEntity();
-    }
-
     /**
      * @deprecated use asEntity()
      */
diff --git a/src/main/java/com/minelittlepony/unicopia/entity/effect/CorruptInfluenceStatusEffect.java b/src/main/java/com/minelittlepony/unicopia/entity/effect/CorruptInfluenceStatusEffect.java
index 98adbb3b..5b416101 100644
--- a/src/main/java/com/minelittlepony/unicopia/entity/effect/CorruptInfluenceStatusEffect.java
+++ b/src/main/java/com/minelittlepony/unicopia/entity/effect/CorruptInfluenceStatusEffect.java
@@ -42,7 +42,7 @@ public class CorruptInfluenceStatusEffect extends StatusEffect {
             }
 
             if (nearby > 1) {
-                if (Equine.of(entity).filter(eq -> eq instanceof Owned && ((Owned<?>)eq).getMaster() != null).isPresent()) {
+                if (Equine.of(entity).filter(eq -> eq instanceof Owned<?> o && o.hasMaster()).isPresent()) {
                     return;
                 }
 
@@ -59,7 +59,9 @@ public class CorruptInfluenceStatusEffect extends StatusEffect {
             clone.copyPositionAndRotation(entity);
 
             Equine.of(clone).ifPresent(eq -> {
-                ((Owned<Entity>)eq).setMaster(mob);
+                if (eq instanceof Owned) {
+                    ((Owned<Entity>)eq).setMaster(mob);
+                }
             });
             mob.world.spawnEntity(clone);
 
diff --git a/src/main/java/com/minelittlepony/unicopia/entity/player/Pony.java b/src/main/java/com/minelittlepony/unicopia/entity/player/Pony.java
index 6c012c7f..939f2a81 100644
--- a/src/main/java/com/minelittlepony/unicopia/entity/player/Pony.java
+++ b/src/main/java/com/minelittlepony/unicopia/entity/player/Pony.java
@@ -297,6 +297,14 @@ public class Pony extends Living<PlayerEntity> implements Copyable<Pony>, Update
         return asEntity();
     }
 
+    /**
+     * @deprecated Pony cannot belong to other entities
+     */
+    @Override
+    @Deprecated
+    public void setMaster(@Nullable LivingEntity owner) {
+    }
+
     public void onSpawn() {
         if (entity.world instanceof ServerWorld sw
                 && getObservedSpecies() == Race.BAT
diff --git a/src/main/java/com/minelittlepony/unicopia/item/AppleItem.java b/src/main/java/com/minelittlepony/unicopia/item/AppleItem.java
index 9bab0ad6..5c00d94c 100644
--- a/src/main/java/com/minelittlepony/unicopia/item/AppleItem.java
+++ b/src/main/java/com/minelittlepony/unicopia/item/AppleItem.java
@@ -23,7 +23,7 @@ public class AppleItem {
     }
 
     private static ActionResult onGroundTick(IItemEntity item) {
-        ItemEntity entity = item.get().getMaster();
+        ItemEntity entity = item.get().asEntity();
 
         if (!entity.isRemoved() && item.getPickupDelay() == 0 && item.getAge() > 2030 && entity.world.random.nextInt(150) < 10) {
 
diff --git a/src/main/java/com/minelittlepony/unicopia/item/JarItem.java b/src/main/java/com/minelittlepony/unicopia/item/JarItem.java
index 48c78a6c..338c0b6a 100644
--- a/src/main/java/com/minelittlepony/unicopia/item/JarItem.java
+++ b/src/main/java/com/minelittlepony/unicopia/item/JarItem.java
@@ -39,7 +39,7 @@ public class JarItem extends ProjectileItem implements ItemImpl.GroundTickCallba
 
     @Override
     public ActionResult onGroundTick(IItemEntity item) {
-        ItemEntity entity = item.get().getMaster();
+        ItemEntity entity = item.get().asEntity();
 
         entity.setInvulnerable(true);
 
diff --git a/src/main/java/com/minelittlepony/unicopia/projectile/MagicProjectileEntity.java b/src/main/java/com/minelittlepony/unicopia/projectile/MagicProjectileEntity.java
index 6eb44c25..19d5b988 100644
--- a/src/main/java/com/minelittlepony/unicopia/projectile/MagicProjectileEntity.java
+++ b/src/main/java/com/minelittlepony/unicopia/projectile/MagicProjectileEntity.java
@@ -7,6 +7,7 @@ import java.util.function.Function;
 import org.jetbrains.annotations.Nullable;
 
 import com.minelittlepony.unicopia.Affinity;
+import com.minelittlepony.unicopia.Owned;
 import com.minelittlepony.unicopia.ability.magic.Affine;
 import com.minelittlepony.unicopia.ability.magic.Caster;
 import com.minelittlepony.unicopia.ability.magic.Levelled;
@@ -52,7 +53,7 @@ import net.minecraft.world.World;
  *
  * Can also carry a spell if needed.
  */
-public class MagicProjectileEntity extends ThrownItemEntity implements Caster<LivingEntity> {
+public class MagicProjectileEntity extends ThrownItemEntity implements Caster<LivingEntity>, Owned<LivingEntity> {
     private static final TrackedData<Float> DAMAGE = DataTracker.registerData(MagicProjectileEntity.class, TrackedDataHandlerRegistry.FLOAT);
     private static final TrackedData<Float> GRAVITY = DataTracker.registerData(MagicProjectileEntity.class, TrackedDataHandlerRegistry.FLOAT);
     private static final TrackedData<Boolean> HYDROPHOBIC = DataTracker.registerData(MagicProjectileEntity.class, TrackedDataHandlerRegistry.BOOLEAN);
@@ -106,16 +107,16 @@ public class MagicProjectileEntity extends ThrownItemEntity implements Caster<Li
         setOwner(owner);
     }
 
-    public void setHomingTarget(@Nullable Entity target) {
-        homingTarget.set(target);
-    }
-
     @Override
     @Nullable
     public LivingEntity getMaster() {
         return (LivingEntity)getOwner();
     }
 
+    public void setHomingTarget(@Nullable Entity target) {
+        homingTarget.set(target);
+    }
+
     @Override
     public LevelStore getLevel() {
         return Caster.of(getMaster()).map(Caster::getLevel).orElse(Levelled.EMPTY);