Princess Ruto, Sage of Water

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

When Princess Ruto deals combat damage to a player, return target instant or sorcery card from your graveyard to your hand.

Slipstream-{u}{u},{t}: Princess Ruto phases out. The next sorcery you cast this turn is X less to cast, where X is equal to the damage Princess Ruto has dealt this turn. Activate only as a sorcery.