1st-level Necromancy

Casting Time: 1 action

Range: Touch

Components: V, S

Duration: Instantaneous

A creature you touch makes a Constitution saving throw, taking 2d10 Necrotic damage on a failed save or half as much damage on a successful one.

Using a Higher-Level Spell Slot.

The damage increases by 2d10 for each spell slot level above 1.