Elemental Masterpiece is a common Sorcery card from Strixhaven: School of Mages (STX), collector number 182. Current market price: $0.19 (foil $0.26), TCGplayer market prices via Scryfall.
Create two 4/4 blue and red Elemental creature tokens. {U/R}{U/R}, Discard this card: Create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")