Wolf in _____ Clothing is a common Creature — Wolf Guest card from Unfinity (UNF), collector number 95. Current market price: $0.07 (foil $0.11), TCGplayer market prices via Scryfall.
When this creature enters, 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.)