make batchs for milling cards (per player, all)

Rework and test the couple of existing cards triggering on mill.

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

@@ -9,6 +9,7 @@ import mage.constants.Zone;
 import mage.filter.FilterCard;
 import mage.game.Game;
 import mage.game.events.GameEvent;
+import mage.game.events.MilledCardEvent;
 
 import java.util.UUID;
 
@@ -58,7 +59,7 @@ public class MillTriggeredAbility extends TriggeredAbilityImpl {
             default:
                 throw new IllegalArgumentException("Wrong code usage. targetController not yet supported: " + targetController);
         }
-        Card card = game.getCard(event.getTargetId());
+        Card card = ((MilledCardEvent) event).getCard();
         return card != null && filter.match(card, getControllerId(), this, game);
     }
 

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

@@ -0,0 +1,54 @@
+
+package mage.abilities.common;
+
+import mage.abilities.TriggeredAbilityImpl;
+import mage.abilities.dynamicvalue.common.SavedMilledValue;
+import mage.abilities.effects.Effect;
+import mage.constants.Zone;
+import mage.filter.FilterCard;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.events.MilledBatchAllEvent;
+
+/**
+ * @author Susucr
+ */
+public class OneOrMoreMilledTriggeredAbility extends TriggeredAbilityImpl {
+
+    private final FilterCard filter;
+
+    public OneOrMoreMilledTriggeredAbility(FilterCard filter, Effect effect) {
+        this(filter, effect, false);
+    }
+
+    public OneOrMoreMilledTriggeredAbility(FilterCard filter, Effect effect, boolean optional) {
+        super(Zone.BATTLEFIELD, effect, optional);
+        this.setTriggerPhrase("Whenever one or more " + filter.getMessage() + " are milled, ");
+        this.filter = filter;
+    }
+
+    private OneOrMoreMilledTriggeredAbility(final OneOrMoreMilledTriggeredAbility ability) {
+        super(ability);
+        this.filter = ability.filter;
+    }
+
+    @Override
+    public OneOrMoreMilledTriggeredAbility copy() {
+        return new OneOrMoreMilledTriggeredAbility(this);
+    }
+
+    @Override
+    public boolean checkEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.MILLED_CARDS_BATCH_FOR_ALL;
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        int count = ((MilledBatchAllEvent) event).getCards().count(filter, getControllerId(), this, game);
+        if (count <= 0) {
+            return false;
+        }
+        getEffects().setValue(SavedMilledValue.VALUE_KEY, count);
+        return true;
+    }
+}

Mage/src/main/java/mage/abilities/dynamicvalue/common/SavedMilledValue.java

@@ -0,0 +1,44 @@
+package mage.abilities.dynamicvalue.common;
+
+import mage.abilities.Ability;
+import mage.abilities.dynamicvalue.DynamicValue;
+import mage.abilities.effects.Effect;
+import mage.game.Game;
+
+import java.util.Optional;
+
+/**
+ * @author Susucr
+ */
+public enum SavedMilledValue implements DynamicValue {
+    MANY("many"),
+    MUCH("much");
+
+    private final String message;
+
+    public static final String VALUE_KEY = "SavedMilled";
+
+    SavedMilledValue(String message) {
+        this.message = "that " + message;
+    }
+
+    @Override
+    public int calculate(Game game, Ability sourceAbility, Effect effect) {
+        return Optional.ofNullable((Integer) effect.getValue(VALUE_KEY)).orElse(0);
+    }
+
+    @Override
+    public SavedMilledValue copy() {
+        return this;
+    }
+
+    @Override
+    public String toString() {
+        return message;
+    }
+
+    @Override
+    public String getMessage() {
+        return "";
+    }
+}