Sailor Mercury

(Kitsa, Otterball Elite)
Vigilance

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

{t}: Draw a card, then discard a card.

{2}, {t}: Copy target instant or sorcery spell you control.
You may choose new targets for the copy. Activate only if Mercury’s power is 3 or greater.