René Descartes, King of Being

Rene Descartes, King of Being doesn't utap, ever.
Carthesian Doubt - When Rene Descartes, King of
Being enters the battlefield or untaps, exile every card
from the battlefield with a questionmark counter on it.
{t}: Return all cards from exile to the battlefield under
their owners control, if they have a questionmark
counter on them. Then you create a 88/88 white God
creature token with hexproof. It is god.