Devika, Avatar of the Phoenix

Glow (Whenever you cast a spell, put a glow counter on this permanent. At the beginning of your upkeep, remove a glow counter from this permanent.)
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Whenever a glow counter is removed from Devika, Avatar of the Phoenix, Devika, Avatar of the Phoenix deals 3 damage to target creature or planeswalker.