Drain Life

9th-level necromancy (hemomancy)

Casting Time: 1 action

Range: 30 feet

Components: V, S

Duration: Instantaneous

You open a deep wound on your body, draining the life of another creature as your own blood leaves your body. As you cast the spell, you must spend a number of hit points. The creature must then make a Constitution saving throw. The creature takes 12d12 + double the number of hit points spent as necrotic damage on a failed save, or half as much damage on a successful one.