new common BecomesTargetSourceFirstTimeTriggeredAbility

Mage/src/main/java/mage/abilities/common/BecomesTargetSourceFirstTimeTriggeredAbility.java

@@ -0,0 +1,41 @@
+package mage.abilities.common;
+
+import mage.abilities.effects.Effect;
+import mage.constants.SetTargetPointer;
+import mage.filter.FilterStackObject;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.permanent.Permanent;
+import mage.watchers.common.NumberOfTimesPermanentTargetedATurnWatcher;
+
+/**
+ * @author xenohedron
+ */
+public class BecomesTargetSourceFirstTimeTriggeredAbility extends BecomesTargetSourceTriggeredAbility {
+
+    public BecomesTargetSourceFirstTimeTriggeredAbility(Effect effect, FilterStackObject filter,
+                                                        SetTargetPointer setTargetPointer, boolean optional) {
+        super(effect, filter, setTargetPointer, optional);
+        this.addWatcher(new NumberOfTimesPermanentTargetedATurnWatcher());
+        setTriggerPhrase("Whenever {this} becomes the target of " + filter.getMessage() + " for the first time each turn, ");
+    }
+
+    protected BecomesTargetSourceFirstTimeTriggeredAbility(final BecomesTargetSourceFirstTimeTriggeredAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public BecomesTargetSourceFirstTimeTriggeredAbility copy() {
+        return new BecomesTargetSourceFirstTimeTriggeredAbility(this);
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        Permanent permanent = game.getPermanent(event.getTargetId());
+        NumberOfTimesPermanentTargetedATurnWatcher watcher = game.getState().getWatcher(NumberOfTimesPermanentTargetedATurnWatcher.class);
+        if (permanent == null || watcher == null || watcher.numTimesTargetedThisTurn(permanent, game) > 1) {
+            return false;
+        }
+        return super.checkTrigger(event, game);
+    }
+}