Ninomae Ina'nis The Priestess

Whenever Ninomae Ina'nis The Priestess or another colorless creature you control dies, you get an experience counter.
{w}{u}{b}{r}{g}: Creatures you control get
+X/+X until end of turn, where X is the number of experience counters you have. Scions and Spawns you control gain indestructible and annihilator 1 until end of
turn.