Create a 1/1 blue and red Otter creature token with prowess. If this spell was cast from anywhere other than your hand, put a +1/+1 counter on that creature.
(Whenever you cast a noncreature spell, a creature with prowess gets +1/+1 until end of turn.)
Flashback
(You may cast this card from your graveyard for its flashback cost. Then exile it.)