Owami, the Prankster

Deathtouch
Ward — Pay 1 life.
When Owami, the Prankster enters the
battlefield, target opponent reveals their hand.
You may choose a nonland permanent you find
there. If you do, exile it. For as long as that card
remains exiled, you may cast it, and you may
spend mana as though it were any color to cast
that spell.