diff --git a/Mage/src/mage/abilities/keyword/FlankingAbility.java b/Mage/src/mage/abilities/keyword/FlankingAbility.java
new file mode 100644
index 0000000000..be7787b8ba
--- /dev/null
+++ b/Mage/src/mage/abilities/keyword/FlankingAbility.java
@@ -0,0 +1,67 @@
+
+package mage.abilities.keyword;
+
+import mage.Constants;
+import mage.abilities.Ability;
+import mage.abilities.TriggeredAbilityImpl;
+import mage.abilities.common.BecomesBlockedByCreatureTriggeredAbility;
+import mage.abilities.effects.Effect;
+import mage.abilities.effects.common.continious.BoostTargetEffect;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.permanent.Permanent;
+import mage.target.targetpointer.FixedTarget;
+
+
+/**
+ *
+ * @author Plopman
+ */
+
+
+public class FlankingAbility extends TriggeredAbilityImpl<FlankingAbility> {
+
+    public FlankingAbility() {
+        super(Constants.Zone.BATTLEFIELD, new BoostTargetEffect(-1, -1, Constants.Duration.EndOfTurn), false);
+    }
+
+    public FlankingAbility(final FlankingAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        if (event.getType() == GameEvent.EventType.BLOCKER_DECLARED && event.getTargetId().equals(this.getSourceId())) {
+            Permanent permanent = game.getPermanent(event.getSourceId());
+            if(permanent != null)
+            {
+                boolean hasFlankingAbility = false;
+                for(Ability ability : permanent.getAbilities()){
+                    if(ability instanceof FlankingAbility){
+                        hasFlankingAbility = true;
+                    }
+                }
+                
+                if(!hasFlankingAbility){
+                    for (Effect effect : this.getEffects()) {
+                        effect.setTargetPointer(new FixedTarget(event.getSourceId()));
+                    }
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    @Override
+    public String getRule() {
+        return "Flanking";
+    }
+
+    @Override
+    public FlankingAbility copy() {
+        return new FlankingAbility(this);
+    }
+
+    
+}
diff --git a/Utils/keywords.txt b/Utils/keywords.txt
index 299ec88911..5285cc087a 100644
--- a/Utils/keywords.txt
+++ b/Utils/keywords.txt
@@ -1,46 +1,47 @@
-Annihilator|number|
-Bloodthirst|number|
-Bushido|number|
-Dredge|number|
-Soulshift|number|
-Basic landcycling|cost|
-Cycling|cost|
-Level up|cost|
-Miracle|cost|
-Unearth|cost|
-Battle cry|new|
-Cascade|new|
-Exalted|new|
-Forestwalk|new|
-Indestructible|new|
-Islandwalk|new|
-Living weapon|new|
-Mountainwalk|new|
-Persist|new|
-Plainswalk|new|
-Rebound|new|
-Storm|new|
-Swampwalk|new|
-Totem armor|new|
-Unblockable|new|
-Undying|new|
-Deathtouch|instance|
-Defender|instance|
-Double Strike|instance|
-Fear|instance|
-First strike|instance|
-Flash|instance|
-Flying|instance|
-Haste|instance|
-Hexproof|instance|
-Infect|instance|
-Intimidate|instance|
-Lifelink|instance|
-Phasing|instance|
-Reach|instance|
-Scavenge|cost|
-Shroud|instance|
-Soulbond|instance|
-Trample|instance|
-Vigilance|instance|
+Annihilator|number|
+Bloodthirst|number|
+Bushido|number|
+Dredge|number|
+Soulshift|number|
+Basic landcycling|cost|
+Cycling|cost|
+Level up|cost|
+Miracle|cost|
+Unearth|cost|
+Battle cry|new|
+Cascade|new|
+Exalted|new|
+Flanking|new|
+Forestwalk|new|
+Indestructible|new|
+Islandwalk|new|
+Living weapon|new|
+Mountainwalk|new|
+Persist|new|
+Plainswalk|new|
+Rebound|new|
+Storm|new|
+Swampwalk|new|
+Totem armor|new|
+Unblockable|new|
+Undying|new|
+Deathtouch|instance|
+Defender|instance|
+Double Strike|instance|
+Fear|instance|
+First strike|instance|
+Flash|instance|
+Flying|instance|
+Haste|instance|
+Hexproof|instance|
+Infect|instance|
+Intimidate|instance|
+Lifelink|instance|
+Phasing|instance|
+Reach|instance|
+Scavenge|cost|
+Shroud|instance|
+Soulbond|instance|
+Trample|instance|
+Vigilance|instance|
 Wither|instance|
\ No newline at end of file