Tezzeret's Gambit is a uncommon Sorcery card from Commander Anthology Volume II (CM2), collector number 51. Current market price: $1.34, 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.)