Harmonic Prodigy 132 (Modern Horizons 2)

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) If an ability of a Shaman or another Wizard you control triggers, that ability triggers an additional time.

NM - $4.60
LP - $3.70
MP - $2.80
HP - $1.90
DMG - $1.50