my initial thought was- does darkness really need another quanta denial card? devourer is solid, and one of the work-arounds to dev is cards generating quanta on use. feels like an arms race, almost like blocking unblockable cards or targeting untargetable cards, but slightly more subtle.
the idea isnt bad, but another theme to allow the mechanic to fall into a different element would alleviate that, but at that point, would it be too situational of a card?