Expressive Iteration is a mythic Sorcery card from Special Guests (SPG), collector number 43. Current market price: $2.40 (foil $11.08), TCGplayer market prices via Scryfall.
Look at the top three cards of your library. Put one of them into your hand, put one of them on the bottom of your library, and exile one of them. You may play the exiled card this turn.