Eradicate is a uncommon Sorcery card from Betrayers of Kamigawa (BOK), collector number 65. Current market price: $0.26 (foil $5.86), TCGplayer market prices via Scryfall.
Exile target nonblack creature. Search its controller's graveyard, hand, and library for all cards with the same name as that creature and exile them. Then that player shuffles.