Emrakul, the World Anew is a mythic Legendary Creature — Eldrazi card from Modern Horizons 3 (MH3), collector number 384. Current market price: $6.85 (foil $10.85), TCGplayer market prices via Scryfall.
When you cast this spell, gain control of all creatures target player controls. Flying, protection from spells and from permanents that were cast this turn When Emrakul leaves the battlefield, sacrifice all creatures you control. Madness—Pay six {C}.