[WOE] Implement Ashiok, Wicked Manipulator (#10909)

* [WOE] Implement Ashiok, Wicket Manipulator

* Add Ashiok's abilities

* basic pay life replacement tests

* many tests later

* add warning on token expecting watcher

* apply review

* rework text generation

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

@@ -0,0 +1,52 @@
+package mage.abilities.dynamicvalue.common;
+
+import mage.abilities.Ability;
+import mage.abilities.dynamicvalue.DynamicValue;
+import mage.abilities.effects.Effect;
+import mage.abilities.hint.Hint;
+import mage.abilities.hint.ValueHint;
+import mage.cards.Card;
+import mage.game.Game;
+
+import java.util.List;
+
+public enum TotalCardsExiledOwnedManaValue implements DynamicValue {
+    instance;
+
+    private static final Hint hint = new ValueHint("Total mana value of cards you own in exile", instance);
+
+    private TotalCardsExiledOwnedManaValue() {
+    }
+
+    @Override
+    public TotalCardsExiledOwnedManaValue copy() {
+        return this;
+    }
+
+    @Override
+    public int calculate(Game game, Ability sourceAbility, Effect effect) {
+        int totalCMC = 0;
+        List<Card> cards = game.getExile().getAllCards(
+                game,
+                sourceAbility.getControllerId()
+        );
+        for (Card card : cards) {
+            totalCMC += card.getManaValue();
+        }
+        return totalCMC;
+    }
+
+    @Override
+    public String getMessage() {
+        return "the total mana value of cards you own in exile";
+    }
+
+    @Override
+    public String toString() {
+        return "X";
+    }
+
+    public static Hint getHint() {
+        return hint;
+    }
+}