Kozilek, Butcher of Truth is a mythic Legendary Creature — Eldrazi card from Ultimate Masters (UMA), collector number 6. Current market price: $47.41 (foil $50.27), TCGplayer market prices via Scryfall.
When you cast this spell, draw four cards. Annihilator 4 (Whenever this creature attacks, defending player sacrifices four permanents of their choice.) When Kozilek is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.