Bushwhack is a uncommon Sorcery card from The Brothers' War (BRO), collector number 174. Current market price: $0.38 (foil $0.39), TCGplayer market prices via Scryfall.
Choose one — • Search your library for a basic land card, reveal it, put it into your hand, then shuffle. • Target creature you control fights target creature you don't control. (Each deals damage equal to its power to the other.)