Decay

You point at one creature you can see within range, and their body becomes surrounded by deathly aura of decay. The target must succeed on a Wisdom saving throw or take 1d10 necrotic damage. Until your next turn in order for the target to regain life from any source, it must succeed on a Constitution saving throw equal to your spell DC. 

The spell’s damage increases by one die when you reach 5th level (2d10), 11th level (3d10), and 17th level (4d10).