Xthyiopa, The Primordial

Indestructible, Hexproof, Trample, Annhilator 6
Eminence - On you're end step, you may pay {6}. If you do, you may cast one card from
exile without paying its mana cost under you're control.
When annhilator is triggered you may choose
which permanent is sacrificed amongst any player
{t}: Add {c}{c}{c}{c}