Prerequisite: Requires succeeding the Wisdom saving throw in a Nightmare encounter and rolling The Exile.
Nightmare. Your mouth opens, spewing forth a black, choking miasma, filling the air around you.
As a bonus action, you can emit a choking miasma. All creatures with 10 feet of you take an extra amount of necrotic damage equal to your proficiency modifier when hit with a weapon attack until the end of your next turn.
You can use this ability once before refreshing it in town using Performing Sacred Rites or Religious Service Downtime actions.
At Higher Levels. Your proficiency modifier increases at 5th level, 9th level, 13th level, and 17th level.