Tezzeret's Gambit is a rare Sorcery card from Strixhaven Mystical Archive (STA), collector number 21. Current market price: $0.50 (foil $4.65), TCGplayer market prices via Scryfall.
({U/P} can be paid with either {U} or 2 life.) Draw two cards, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)