Calia's Death Blast

If Calia ever falls below 1/4 health, her eyes turn black and a powerful demon will channel this spell through her until everyone with 100ft of Calia is dead. At the end of her turns Calia can make a wisdom saving throw DC 22 to regain control. 

A sphere of negative energy ripples out in a 60-foot- radius sphere from a point centered on you. Each creature in that area must make a Constitution saving throw if it enters or starts its turn within the sphere. A target takes 10d6 necrotic damage on a failed save and is paralyzed for 1d4 turn, or half as much damage on a successful one.

At Higher Levels. When you cast this spell using a spell slot of 7th level or higher, the damage increases by 2d6 for each slot level above 6th.