Harbringer of Doom

Level up {4} ({4}: put a level counter on this creature.
Level up only as a sorcery.)
Level 1-2 : Creatures you control get +0/+2.
Level 3-5 : "{t}: Put X 1/1 colorless Eldrazi
tokens onto the battlefield, where X is the
amount of Level-Up counters."
Level 6 : "{t}: sacrifice Harbringer of Doom:
Destroy all creatures you don't control"