Hand of Emrakul is a common Creature — Eldrazi card from Rise of the Eldrazi (ROE), collector number 5. Current market price: $0.39 (foil $7.45), TCGplayer market prices via Scryfall.
You may sacrifice four Eldrazi Spawn rather than pay this spell's mana cost. Annihilator 1 (Whenever this creature attacks, defending player sacrifices a permanent of their choice.)