Tainted Flesh

You extend your hand toward a creature you can see within range and direct the essence of death into their flesh. The creature must succeed on a Wisdom saving throw or take 3d8 necrotic damage. 

The flesh of any creature targeted with this spell will turn sickly grey for 1d10 rounds. All healing targeted at the creature fails for the duration.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d8 for each slot level above 3rd.