Emrakul, The Forsaken Mind

Instead of paying Emrakul's mana cost, you may reveal cards from the top of your library until you reveal seven non-land cards. If you do, exile these cards. Until end of turn, any opponent may cast spells exiled by Emrakul without paying thier mana cost.
Flying, Hexproof
Whenever Emrakul attacks, target opponent discards their hand,