Ebon Smoke

You invoke a 5 foot radius of black smoke from a point that you can see that is within range. Each creature in the spells area must make a Constitution saving throw against your spell DC, taking 2d6 necrotic damage on a failed saving throw, or half that much on a successful one. 

At Higher Levels. When you cast this spell using a slot of 2nd or higher, the damage increases by 2d6 for each slot above the first.

(i think i heard this on a youtube video somewhere, i dont remember where so i cannot really give credit, i apologize)