Bebop & Rocksteady is a rare Legendary Creature — Boar Rhino Mutant card from Teenage Mutant Ninja Turtles (TMT), collector number 140. Current market price: $0.26 (foil $0.39), TCGplayer market prices via Scryfall.
Whenever Bebop & Rocksteady attack or block, sacrifice a permanent unless you discard a card.