The Cult of Yore

When this creature enters the battlefield,
search your library for a God or Nephilim
creature and exile it. If your devotion to the
card's colours total at least 5 you may cast it
without paying it's mana cost.
{w}{u}{b}{r}{g}: Target creature gets an Unblockable counter. When that creature attacks this turn,
exile this card. Return it to the battlefield at the beginning of the next end step.