Theft of the Moirai

You steal the time and life from a single creature within range. The target must make a Constitution saving throw. On a failed save, the target takes 4d8 necrotic damage or half as much damage on a successful save. You regain a number of hit points equal to the necrotic damage the target takes.

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.