Oraza, Jeskai Champion

Hexproof, First Strike
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Whenever Oraza, Jeskai Champion attacks, you may pay {x}{w/u}{u/r}{r/w}. If you do, Scry X and exile the top X cards your library and if any of those cards are noncreature spells, you may cast those cards without paying its mana cost. Then, put the remaining cards on the bottom of its owner's library in any order.