[ECL] Implement Mutable Explorer

Mage/src/main/java/mage/game/permanent/token/MutavaultToken.java

@@ -0,0 +1,38 @@
+package mage.game.permanent.token;
+
+import mage.abilities.common.SimpleActivatedAbility;
+import mage.abilities.costs.mana.GenericManaCost;
+import mage.abilities.effects.common.continuous.BecomesCreatureSourceEffect;
+import mage.abilities.mana.ColorlessManaAbility;
+import mage.constants.CardType;
+import mage.constants.Duration;
+import mage.game.permanent.token.custom.CreatureToken;
+
+/**
+ * @author TheElk801
+ */
+public final class MutavaultToken extends TokenImpl {
+
+    public MutavaultToken() {
+        super("Mutavault", "Mutavault token");
+        cardType.add(CardType.LAND);
+
+        // {tap}: Add {C}.
+        this.addAbility(new ColorlessManaAbility());
+
+        // {1}: Mutavault becomes a 2/2 creature with all creature types until end of turn. It's still a land.
+        this.addAbility(new SimpleActivatedAbility(new BecomesCreatureSourceEffect(
+                new CreatureToken(2, 2, "2/2 creature with all creature types")
+                        .withAllCreatureTypes(true),
+                CardType.LAND, Duration.EndOfTurn
+        ), new GenericManaCost(1)));
+    }
+
+    private MutavaultToken(final MutavaultToken token) {
+        super(token);
+    }
+
+    public MutavaultToken copy() {
+        return new MutavaultToken(this);
+    }
+}

Mage/src/main/java/mage/game/permanent/token/custom/CreatureToken.java

@@ -73,6 +73,11 @@ public final class CreatureToken extends TokenImpl {
         return this;
     }
 
+    public CreatureToken withAllCreatureTypes(boolean allCreatureTypes) {
+        this.subtype.setIsAllCreatureTypes(allCreatureTypes);
+        return this;
+    }
+
     private CreatureToken(final CreatureToken token) {
         super(token);
     }