[Bleeding] Changed event system into a new, much faster design. Huge thanks to @zml2008 & @lahwran.

src/main/java/org/bukkit/event/entity/CreeperPowerEvent.java

@@ -2,6 +2,7 @@ package org.bukkit.event.entity;
 
 import org.bukkit.entity.Entity;
 import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
 
 /**
  * Called when a Creeper is struck by lightning.
@@ -10,6 +11,7 @@ import org.bukkit.event.Cancellable;
  */
 @SuppressWarnings("serial")
 public class CreeperPowerEvent extends EntityEvent implements Cancellable {
+    private static final HandlerList handlers = new HandlerList();
 
     private boolean canceled;
     private PowerCause cause;
@@ -53,6 +55,15 @@ public class CreeperPowerEvent extends EntityEvent implements Cancellable {
         return cause;
     }
 
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+
     /**
      * An enum to specify the cause of the change in power
      */