Rot of the Old World

When a non-token creature is destroyed, grant all Green Corpse creature tokens +0/+1 and summon a 0/1 Green Corpse creature token with Defender.
"The old world stays with us, in the environment, the earth, the worms and the rot. And the bodies of the modern dead will show the power of the old rot" - Edict of the Old World 1:3