diff --git a/Mage.Sets/src/mage/sets/magic2015/KurkeshOnakkeAncient.java b/Mage.Sets/src/mage/sets/magic2015/KurkeshOnakkeAncient.java
index 91c880acb42..961a2c742fe 100644
--- a/Mage.Sets/src/mage/sets/magic2015/KurkeshOnakkeAncient.java
+++ b/Mage.Sets/src/mage/sets/magic2015/KurkeshOnakkeAncient.java
@@ -80,15 +80,15 @@ public class KurkeshOnakkeAncient extends CardImpl {
 }
 
 class KurkeshOnakkeAncientTriggeredAbility extends TriggeredAbilityImpl {
-    
+
     KurkeshOnakkeAncientTriggeredAbility() {
         super(Zone.BATTLEFIELD, new KurkeshOnakkeAncientEffect(), false);
     }
-    
+
     KurkeshOnakkeAncientTriggeredAbility(final KurkeshOnakkeAncientTriggeredAbility ability) {
         super(ability);
     }
-    
+
     @Override
     public KurkeshOnakkeAncientTriggeredAbility copy() {
         return new KurkeshOnakkeAncientTriggeredAbility(this);
@@ -98,11 +98,11 @@ class KurkeshOnakkeAncientTriggeredAbility extends TriggeredAbilityImpl {
     public boolean checkEventType(GameEvent event, Game game) {
         return event.getType() == EventType.ACTIVATED_ABILITY;
     }
-    
+
     @Override
     public boolean checkTrigger(GameEvent event, Game game) {
         Card source = game.getPermanentOrLKIBattlefield(event.getSourceId());
-        if (source.getCardType().contains(CardType.ARTIFACT)) {
+        if (source != null && source.getCardType().contains(CardType.ARTIFACT)) {
             StackAbility stackAbility = (StackAbility) game.getStack().getStackObject(event.getSourceId());
             if (!(stackAbility.getStackAbility() instanceof ManaAbility)) {
                 Effect effect = this.getEffects().get(0);
@@ -112,7 +112,7 @@ class KurkeshOnakkeAncientTriggeredAbility extends TriggeredAbilityImpl {
         }
         return false;
     }
-    
+
     @Override
     public String getRule() {
         return "Whenever you activate an ability of an artifact, if it isn't a mana ability, you may pay {R}.  If you do, copy that ability.  You may choose new targets for the copy.";
@@ -120,21 +120,21 @@ class KurkeshOnakkeAncientTriggeredAbility extends TriggeredAbilityImpl {
 }
 
 class KurkeshOnakkeAncientEffect extends OneShotEffect {
-    
+
     KurkeshOnakkeAncientEffect() {
         super(Outcome.Benefit);
         this.staticText = ", you may pay {R}.  If you do, copy that ability.  You may choose new targets for the copy.";
     }
-    
+
     KurkeshOnakkeAncientEffect(final KurkeshOnakkeAncientEffect effect) {
         super(effect);
     }
-    
+
     @Override
     public KurkeshOnakkeAncientEffect copy() {
         return new KurkeshOnakkeAncientEffect(this);
     }
-    
+
     @Override
     public boolean apply(Game game, Ability source) {
         Player player = game.getPlayer(source.getControllerId());