Ultimate Adventurer's Handbook
Death Burst
4-level Necromancy
Casting Time: 1 action
Range/Area: Self (20-foot radius)
Components: V
Duration: Instantaneous
You gather necromantic energies around yourself and release them in a burst that ripples outward from you. Each creature of your choice within 20 feet of you must make a Constitution saving throw, taking 5d8 necrotic damage on a failed save or half as much on a successful one. A creature reduced to 0 hit points by this damage dies.
At higher levels: When you cast this spell using a spell slot of 5th level or higher, for each slot level above 4th, the damage increases by 1d8 and the radius increases by 5 feet.