Circle of Death

Level 6 Necromancy Spell
Use: A sphere of negative energy ripples out in a 60-foot-radius sphere from a point within range. Each creature in that area must make a Constitution saving roll. A target takes 8d6 necrotic damage on a failed save, or half as much damage on a successful one.
At Higher Levels: When you cast this spell using a spell of 7th level or higher, the damage increases by 2d6 for each level above 6th.
Range: 150 ft casting
Casting Time: 1 Action
Duration: Instantaneous
Components: Vocal, Somatic, Material (the powder of a crushed black pearl worth at least 50 gp)
Mana Cost: 60
Worth: 6 gp
Available Classes: Sorcerer, Warlock, Wizard