[OTC] Implement Smirking Spelljacker

Mage/src/main/java/mage/abilities/effects/common/MayCastTargetCardEffect.java

@@ -34,6 +34,13 @@ public class MayCastTargetCardEffect extends OneShotEffect {
         this(CastManaAdjustment.NONE, thenExile);
     }
 
+    /**
+     * Allows to cast the target card immediately, either for its cost or with a modifier (like for free, or mana as any type).
+     */
+    public MayCastTargetCardEffect(CastManaAdjustment manaAdjustment) {
+        this(manaAdjustment, false);
+    }
+
     /**
      * Allows to cast the target card immediately, either for its cost or with a modifier (like for free, or mana as any type).
      */