Vii'Arax Prodigy Apprentice

Quick Study—{p/u}{ut}Copy target spell or ability used by an opponent this turn. You may cast your copy without paying its mana cost. This ability may be used as an interrupt.

Devil of the Arena—{u}{u}{u}{p/u}{p/u}{p/u}{t} Counter target spell an opponent controls, then this creature fights target creature an opponent controls. Until end of turn, Vii'Arax Prodigy Apprentice gains Deathtouch, Hexproof, and Indestructible.