The description say: Casting an empowering rift grants Devour. Damage dealt by you and your allies from within your empowering rift will disrupt combatants. These legs only work when using a Void subclass, something not specified in the description. Void subclass can already get devour from ability kills, orbs, and picking up a void breach. Combatants don’t get disrupted unless they are Overload Champs. Why would anyone ever use this exotic??