Enlightening Mentor

Affinity for creatures with prowess (This spell costs {1} less to cast for each creature with prowess you control)
Lifelink
Prowess (Whenever you cast a noncreature spell, this crature gets +1/+1 until end of turn.)
Whenever you gain life, you may return target noncreature card with converted mana cost 3 or less in your graveyard to your hand.