Emrakul, Who Was Betrayed

The total mana cost of all Eldrazi you control is subtracted from Emrakul's mana cost. * equals 20 minus the opponents life total plus the total power of all creatures. When you cast this spell, gain control of opponents next turn. If they control an Eldrazi or Angel, destroy it. Flying, Trample, Annhilator 8. Protection from all spells except Ulamog, Kozilek, Avacyn, Serra, or Emrakul's Ender.
"What the f-"