Death Breath

After drinking the vile you feel the necrotic sent of death fill your lungs. Until the spell ends, the creature can use an action to exhale a deathly necrotic breath in a 20-foot cone. Each creature in that area must make a Constitution saving throw, taking 10d4 damage Necrotic damage on a failed save, or half as much damage on a successful one.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 3d4 for each slot level above 5th.