Bebop & Rocksteady is a rare Legendary Creature — Boar Rhino Mutant card from Teenage Mutant Ninja Turtles (TMT), collector number 204. Current market price: $1.72 (foil $3.28), TCGplayer market prices via Scryfall.
Whenever Bebop & Rocksteady attack or block, sacrifice a permanent unless you discard a card.