Transmogrify is a rare Sorcery card from Core Set 2021 (M21), collector number 370. Current market price: $0.63 (foil $1.09), TCGplayer market prices via Scryfall.
Exile target creature. That creature's controller reveals cards from the top of their library until they reveal a creature card. That player puts that card onto the battlefield, then shuffles the rest into their library.