Whenever Azlask, the Swelling Scourge or another colorless creature you control dies, you get an experience counter. : 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 (Effects that say "destroy" don't destroy that permanent. An indestructible creature can't be destroyed by damage.) and annihilator 1 (Whenever this creature attacks, defending player sacrifices a permanents.) until end of turn.