Disemvowel is a common Sorcery card from Unfinity (UNF), collector number 71. Current market price: $0.05 (foil $0.10), TCGplayer market prices via Scryfall.
Destroy target creature. That creature's controller loses 1 life for each unique vowel in the creature's name. (The vowels are A, E, I, O, U, and Y.)