diff --git a/Mage.Tests/src/test/java/org/mage/test/cards/abilities/keywords/ManifestTest.java b/Mage.Tests/src/test/java/org/mage/test/cards/abilities/keywords/ManifestTest.java
index 6b6b280f877..af1a2e7ab71 100644
--- a/Mage.Tests/src/test/java/org/mage/test/cards/abilities/keywords/ManifestTest.java
+++ b/Mage.Tests/src/test/java/org/mage/test/cards/abilities/keywords/ManifestTest.java
@@ -100,4 +100,39 @@ public class ManifestTest extends CardTestPlayerBase {
         assertPermanentCount(playerB, "Silvercoat Lion", 1);
         assertPowerToughness(playerB, "Silvercoat Lion", 2, 2);
     }
+    /**
+     * If Doomwake Giant gets manifested, it's Constellation trigger may not trigger
+     */
+    @Test
+    public void testETBTriggeredAbilities3() {
+        addCard(Zone.BATTLEFIELD, playerB, "Island", 2);
+        // Exile target creature. Its controller manifests the top card of his or her library {1}{U}
+        addCard(Zone.HAND, playerB, "Reality Shift");
+
+        // Constellation - When Doomwake Giant or another enchantment enters the battlefield
+        // under your control, creatures your opponents control get -1/-1 until end of turn.
+        addCard(Zone.LIBRARY, playerA, "Doomwake Giant");
+        
+        addCard(Zone.BATTLEFIELD, playerB, "Pillarfield Ox");        
+        addCard(Zone.BATTLEFIELD, playerA, "Silvercoat Lion");
+        
+        skipInitShuffling();
+
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerB, "Reality Shift", "Silvercoat Lion");
+
+        setStopAt(1, PhaseStep.BEGIN_COMBAT);
+        execute();
+
+        // no life gain
+        assertLife(playerA, 20);
+        assertLife(playerB, 20);
+        assertGraveyardCount(playerB, "Reality Shift", 1);
+        assertExileCount("Silvercoat Lion" , 1);
+        // a facedown creature is on the battlefield
+        assertPermanentCount(playerA, "face down creature", 1);
+        assertPowerToughness(playerA, "face down creature", 2, 2);
+        // PlayerA's Pillarfield Ox should not have get -1/-1/
+        assertPermanentCount(playerB, "Pillarfield Ox", 1);
+        assertPowerToughness(playerB, "Pillarfield Ox", 2, 4);
+    }    
 }
diff --git a/Mage/src/mage/abilities/TriggeredAbilities.java b/Mage/src/mage/abilities/TriggeredAbilities.java
index ae0106a3eba..a154b93c902 100644
--- a/Mage/src/mage/abilities/TriggeredAbilities.java
+++ b/Mage/src/mage/abilities/TriggeredAbilities.java
@@ -98,14 +98,24 @@ public class TriggeredAbilities extends ConcurrentHashMap<String, TriggeredAbili
   
     private boolean checkAbilityStillExists(TriggeredAbility ability, GameEvent event, MageObject object) {
         boolean exists = true;
+        
         if (!object.getAbilities().contains(ability)) {
             exists = false;
             if (object instanceof PermanentCard) {
                 PermanentCard permanent = (PermanentCard)object;
-                if (permanent.canTransform() && event.getType() == GameEvent.EventType.TRANSFORMED) {
+                if (permanent.isFaceDown()) {
+                    exists = ability.getWorksFaceDown();
+                } else if (permanent.canTransform() && event.getType() == GameEvent.EventType.TRANSFORMED) {
                     exists = permanent.getCard().getAbilities().contains(ability);
+                }                
+            }            
+        } else {
+            if (object instanceof PermanentCard) {
+                PermanentCard permanent = (PermanentCard)object;
+                if (permanent.isFaceDown()) {
+                    exists = ability.getWorksFaceDown();
                 }
-            }
+            }            
         }
         return exists;
     }