Orath, the Mana Seeker

+1: Target opponent reveals their hand. You may exile a nonland card from it. You may cast that card without paying its mana cost.
-2: Destroy target artifact or enchantment. You may return target artifact or enchantment from your graveyard to the battlefield.
-7: Exile all colorless creatures on the battlefield, then return all creatures from your graveyard to the battlefield, tapped and attacking.