Chaotic Transformation is a rare Sorcery card from Dominaria United Promos (PDMU), collector number 117p. Current market price: $0.39 (foil $0.24), TCGplayer market prices via Scryfall.
Exile up to one target artifact, up to one target creature, up to one target enchantment, up to one target planeswalker, and/or up to one target land. For each permanent exiled this way, its controller reveals cards from the top of their library until they reveal a card that shares a card type with it, puts that card onto the battlefield, then shuffles.