Circle of Death

6th-Level Necromancy Spell (Sorcerer, Warlock, Wizard)

Casting Time: Action
Range: 150 feet
Components: V, S, M (the powder of a crushed black pearl worth 500+ GP)
Duration: Instantaneous

Negative energy ripples out in a 60-foot-radius

A Sphere is an area of effect that extends in straight lines from a point of origin outward in all directions. The effect that creates a Sphere specifies the distance it extends as the radius of the Sphere.

A Sphere's point of origin is included in the Sphere's area of effect.

from a point you choose within range. Each creature in that area makes a Constitution saving throw, taking 8d8 Necrotic damage on a failed save or half as much damage on a successful one.

At Higher Levels: The damage increases by 2d8 for each spell slot level above 6.

Source: Player's Handbook, p. 250