Phyrexian Obliterator is a mythic Creature — Phyrexian Horror card from Phyrexia: All Will Be One Promos (PONE), collector number 105p. Current market price: $13.95 (foil $13.78), TCGplayer market prices via Scryfall.
Trample Whenever a source deals damage to this creature, that source's controller sacrifices that many permanents of their choice.