diff --git a/src/engine/objects/AbstractWorldObject.java b/src/engine/objects/AbstractWorldObject.java
index f7834856..1f3487d2 100644
--- a/src/engine/objects/AbstractWorldObject.java
+++ b/src/engine/objects/AbstractWorldObject.java
@@ -29,6 +29,7 @@ import engine.net.client.ClientConnection;
 import engine.net.client.msg.UpdateEffectsMsg;
 import engine.powers.EffectsBase;
 import engine.server.MBServerStatics;
+import engine.wpak.data.ModifierEntry;
 import org.pmw.tinylog.Logger;
 
 import java.sql.ResultSet;
@@ -60,6 +61,10 @@ public abstract class AbstractWorldObject extends AbstractGameObject {
     private int objectTypeMask = 0;
     private Bounds bounds;
 
+    // Effects collection for wpak power manager
+
+    public ConcurrentHashMap<engine.wpak.data.Effect, ConcurrentHashMap<ModifierEntry, Integer>> _effects = new ConcurrentHashMap<>();
+
     /**
      * No Id Constructor
      */