diff --git a/src/main/java/com/alttd/custommobs/Main.java b/src/main/java/com/alttd/custommobs/Main.java
index fdcd179..8fa4f31 100644
--- a/src/main/java/com/alttd/custommobs/Main.java
+++ b/src/main/java/com/alttd/custommobs/Main.java
@@ -30,7 +30,7 @@ public class Main extends JavaPlugin {
     public void reloadConfigs() {
         Config.reload();
         Messages.reload();
-        MobTypes.reload();
+        MobTypes.reload(this);
     }
 
     @Override
diff --git a/src/main/java/com/alttd/custommobs/abilities/modifiers/AttributeModifier.java b/src/main/java/com/alttd/custommobs/abilities/modifiers/AttributeModifier.java
deleted file mode 100644
index 16ee8c1..0000000
--- a/src/main/java/com/alttd/custommobs/abilities/modifiers/AttributeModifier.java
+++ /dev/null
@@ -1,34 +0,0 @@
-package com.alttd.custommobs.abilities.modifiers;
-
-import com.alttd.custommobs.abilities.EntityModifier;
-import lombok.extern.slf4j.Slf4j;
-import org.bukkit.attribute.Attribute;
-import org.bukkit.attribute.AttributeInstance;
-import org.bukkit.entity.LivingEntity;
-
-@Slf4j
-public class AttributeModifier implements EntityModifier {
-
-    private final double value;
-    private final Attribute attribute;
-
-    public AttributeModifier(Attribute attribute, double value) {
-        this.value = value;
-        this.attribute = attribute;
-    }
-
-    @Override
-    public void apply(LivingEntity entity) {
-        AttributeInstance attributeInstance = entity.getAttribute(attribute);
-        if (attributeInstance == null) {
-            log.warn("Entity {} has no {} attribute", entity.getName(), attribute.name());
-            return;
-        }
-        attributeInstance.setBaseValue(value);
-    }
-
-    @Override
-    public String getName() {
-        return attribute.name();
-    }
-}
diff --git a/src/main/java/com/alttd/custommobs/abilities/modifiers/EntityAttributeModifier.java b/src/main/java/com/alttd/custommobs/abilities/modifiers/EntityAttributeModifier.java
new file mode 100644
index 0000000..8674fc9
--- /dev/null
+++ b/src/main/java/com/alttd/custommobs/abilities/modifiers/EntityAttributeModifier.java
@@ -0,0 +1,48 @@
+package com.alttd.custommobs.abilities.modifiers;
+
+import com.alttd.custommobs.Main;
+import com.alttd.custommobs.abilities.EntityModifier;
+import lombok.extern.slf4j.Slf4j;
+import org.bukkit.NamespacedKey;
+import org.bukkit.attribute.Attribute;
+import org.bukkit.attribute.AttributeInstance;
+import org.bukkit.attribute.AttributeModifier;
+import org.bukkit.entity.LivingEntity;
+
+@Slf4j
+public class EntityAttributeModifier implements EntityModifier {
+
+    private final double value;
+    private final Attribute attribute;
+    private final Main main;
+
+    public EntityAttributeModifier(Main main, Attribute attribute, double value) {
+        this.main = main;
+        this.value = value;
+        this.attribute = attribute;
+    }
+
+    @Override
+    public void apply(LivingEntity entity) {
+        AttributeInstance attributeInstance = entity.getAttribute(attribute);
+        if (attributeInstance == null) {
+            log.warn("Entity {} has no {} attribute", entity.getName(), attribute.name());
+            return;
+        }
+        log.info("DEBUG: Setting attribute {} to {}", attribute.name(), value);
+        NamespacedKey namespacedKey = NamespacedKey.fromString("cm", main);
+        if (namespacedKey == null) {
+            log.error("Namespaced key was null when applying attribute modifier");
+            return;
+        }
+        AttributeModifier attributeModifier = new AttributeModifier(namespacedKey,
+                attributeInstance.getValue() - value,
+                AttributeModifier.Operation.ADD_NUMBER);
+        attributeInstance.addModifier(attributeModifier);
+    }
+
+    @Override
+    public String getName() {
+        return attribute.name();
+    }
+}
diff --git a/src/main/java/com/alttd/custommobs/config/MobTypes.java b/src/main/java/com/alttd/custommobs/config/MobTypes.java
index 7643868..1cf05df 100644
--- a/src/main/java/com/alttd/custommobs/config/MobTypes.java
+++ b/src/main/java/com/alttd/custommobs/config/MobTypes.java
@@ -1,7 +1,8 @@
 package com.alttd.custommobs.config;
 
+import com.alttd.custommobs.Main;
 import com.alttd.custommobs.abilities.Ability;
-import com.alttd.custommobs.abilities.modifiers.AttributeModifier;
+import com.alttd.custommobs.abilities.modifiers.EntityAttributeModifier;
 import com.alttd.custommobs.abilities.EntityModifier;
 import com.alttd.custommobs.abilities.MobType;
 import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap;
@@ -16,19 +17,21 @@ import java.util.*;
 @Slf4j
 public class MobTypes extends AbstractConfig {
     static MobTypes config;
+    private final Main main;
 
-    MobTypes() {
+    MobTypes(Main main) {
         super(
                 new File(File.separator
                          + "mnt" + File.separator
                          + "configs" + File.separator
                          + "custommobs"),
                 "mob-types.yml");
+        this.main = main;
     }
 
-    public static void reload() {
+    public static void reload(Main main) {
         log.info("Reloading mob types");
-        config = new MobTypes();
+        config = new MobTypes(main);
         config.readConfig(MobTypes.class, null);
     }
 
@@ -80,7 +83,7 @@ public class MobTypes extends AbstractConfig {
         private static EntityModifier getAttribute(String attributeName, double value) {
             try {
                 Attribute attribute = Attribute.valueOf(attributeName);
-                return new AttributeModifier(attribute, value);
+                return new EntityAttributeModifier(config.main, attribute, value);
             } catch (IllegalArgumentException e) {
                 log.error("Invalid attribute {}", attributeName, e);
                 return null;