The Meathook Massacre is a mythic Legendary Enchantment card from The List (PLST), collector number MID-112. Current market price: $25.49, TCGplayer market prices via Scryfall.
When The Meathook Massacre enters, each creature gets -X/-X until end of turn. Whenever a creature you control dies, each opponent loses 1 life. Whenever a creature an opponent controls dies, you gain 1 life.