Emberheart Challenger (Foil) 1R
Creature — Mouse Warrior
Haste

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Valiant — Whenever this creature becomes the target of a spell or ability you control for the first time each turn, exile the top card of your library. Until end of turn, you may play that card.