Defibrillate

You deliver a shock to a creature with 0 hit points. The creature becomes stable. This spell has no effect on undead or constructs.

Alternatively, you can make a melee spell attack against a creature. On a hit, the target takes 1d6 necrotic damage.

The spell's damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).