Censur of Necrosis

As you cast this spell and enhance incense of the censur to damages all creatures who the smoke envelops. 

As long as you hold the censur and concentrate on the spell, you can, as a Bonus Action, force any creature within 30ft of you to make a Constitution Saving Throw. On a failed save, the creature takes 2d10 necrotic damage and becomes Poisoned for the duration of the spell.