Samshiel, Angel of the Eclipse

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Whenever you cast an instant or sorcery spell, you may pay {1}. If you do, copy that spell. You may choose new targets for the copy.
At the beginning of your upkeep, you may sacrifice a creature. If you do, return Samshiel from your graveyard or exile to your hand.