[MIR] Implement Teferi's Imp (#11326)

Mage/src/main/java/mage/abilities/Ability.java

@@ -419,6 +419,22 @@ public interface Ability extends Controllable, Serializable {
      */
     void setWorksFaceDown(boolean worksFaceDown);
 
+    /**
+     * Returns true if this ability has to work also with phased out object.
+     *
+     * @return
+     */
+    boolean getWorksPhasedOut();
+
+    /**
+     * Sets the value for the worksPhasedOut flag
+     * <p>
+     * true = the ability works also if the object is phased out
+     *
+     * @param worksPhasedOut
+     */
+    void setWorksPhasedOut(boolean worksPhasedOut);
+
     /**
      * Returns true if this ability's rule is visible on the card tooltip
      *

Mage/src/main/java/mage/abilities/AbilityImpl.java

@@ -70,6 +70,7 @@ public abstract class AbilityImpl implements Ability {
     protected boolean ruleAdditionalCostsVisible = true;
     protected boolean activated = false;
     protected boolean worksFaceDown = false;
+    protected boolean worksPhasedOut = false;
     protected int sourceObjectZoneChangeCounter;
     protected List<Watcher> watchers = new ArrayList<>(); // access to it by GetWatchers only (it can be overridden by some abilities)
     protected List<Ability> subAbilities = null;
@@ -121,6 +122,7 @@ public abstract class AbilityImpl implements Ability {
         this.ruleVisible = ability.ruleVisible;
         this.ruleAdditionalCostsVisible = ability.ruleAdditionalCostsVisible;
         this.worksFaceDown = ability.worksFaceDown;
+        this.worksPhasedOut = ability.worksPhasedOut;
         this.abilityWord = ability.abilityWord;
         this.flavorWord = ability.flavorWord;
         this.sourceObjectZoneChangeCounter = ability.sourceObjectZoneChangeCounter;
@@ -1050,7 +1052,9 @@ public abstract class AbilityImpl implements Ability {
         }
         if (object != null) {
             if (object instanceof Permanent) {
-                return object.hasAbility(this, game) && ((Permanent) object).isPhasedIn();
+                return object.hasAbility(this, game) && (
+                        ((Permanent) object).isPhasedIn() || this.getWorksPhasedOut()
+                );
             } else {
                 // cards and other objects
                 return object.hasAbility(this, game);
@@ -1270,6 +1274,16 @@ public abstract class AbilityImpl implements Ability {
         this.worksFaceDown = worksFaceDown;
     }
 
+    @Override
+    public boolean getWorksPhasedOut() {
+        return worksPhasedOut;
+    }
+
+    @Override
+    public void setWorksPhasedOut(boolean worksPhasedOut) {
+        this.worksPhasedOut = worksPhasedOut;
+    }
+
     @Override
     public MageObject getSourceObject(Game game) {
         return game.getObject(getSourceId());
@@ -1481,7 +1495,7 @@ public abstract class AbilityImpl implements Ability {
             // to change the zone of any existing singleton abilities
             return this;
         }
-        AbilityImpl copy = ((AbilityImpl)this.copy());
+        AbilityImpl copy = ((AbilityImpl) this.copy());
         copy.zone = zone;
         copy.newId();
         return copy;

Mage/src/main/java/mage/abilities/TriggeredAbilityImpl.java

@@ -315,7 +315,6 @@ public abstract class TriggeredAbilityImpl extends AbilityImpl implements Trigge
                     source = game.getLastKnownInformation(getSourceId(), Zone.BATTLEFIELD);
                 }
                 break;
-            case PHASED_OUT:
             case PHASED_IN:
                 if (isLeavesTheBattlefieldTrigger()) {
                     source = game.getLastKnownInformation(getSourceId(), event.getZone());

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

@@ -0,0 +1,38 @@
+package mage.abilities.common;
+
+import mage.abilities.TriggeredAbilityImpl;
+import mage.abilities.effects.Effect;
+import mage.constants.Zone;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+
+/**
+ * @author Susucr
+ */
+public class SourcePhaseOutTriggeredAbility extends TriggeredAbilityImpl {
+
+    public SourcePhaseOutTriggeredAbility(Effect effect, boolean optional) {
+        super(Zone.BATTLEFIELD, effect, optional);
+        setTriggerPhrase("Whenever {this} phases out, ");
+        setWorksPhasedOut(true);
+    }
+
+    protected SourcePhaseOutTriggeredAbility(final SourcePhaseOutTriggeredAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public SourcePhaseOutTriggeredAbility copy() {
+        return new SourcePhaseOutTriggeredAbility(this);
+    }
+
+    @Override
+    public boolean checkEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.PHASED_OUT;
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        return getSourceId().equals(event.getTargetId());
+    }
+}

Mage/src/main/java/mage/constants/Zone.java

@@ -2,7 +2,6 @@
 package mage.constants;
 
 /**
- *
  * @author North
  */
 public enum Zone {

Mage/src/main/java/mage/game/stack/StackAbility.java

@@ -540,6 +540,16 @@ public class StackAbility extends StackObjectImpl implements Ability {
         this.ability.setWorksFaceDown(worksFaceDown);
     }
 
+    @Override
+    public boolean getWorksPhasedOut() {
+        return this.ability.getWorksPhasedOut();
+    }
+
+    @Override
+    public void setWorksPhasedOut(boolean worksPhasedOut) {
+        this.ability.setWorksPhasedOut(worksPhasedOut);
+    }
+
     @Override
     public List<Watcher> getWatchers() {
         return this.ability.getWatchers();