Wolf in _____ Clothing [Unfinity]

Set: Unfinity Type: Creature — Wolf Guest Rarity: Common Cost: {3}{B} When this creature enters the battlefield, you may put a name sticker on it. When you do, up to X target creatures each get -1/-1 until end of turn, where X is the number of unique vowels on that sticker. (The vowels are A, E, I, O, U, and Y.) “And to think, I came in here looking for someone to eat.”