Thirsting Roots is a common Sorcery card from Phyrexia: All Will Be One (ONE), collector number 185. Current market price: $0.57 (foil $0.78), TCGplayer market prices via Scryfall.
Choose one — • Search your library for a basic land card, reveal it, put it into your hand, then shuffle. • Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)