Enervate

Necromantic energy washes over a creature of your choice that you can see within range, draining vitality from it. The target must make a Constitution saving throw or take 4d10 necrotic damage, suffer one level of exhaustion. Any levels of exhaustion caused by this spell go away when the spell ends.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d10 for each slot level above 5th.