Darkfire Vortex

A blast of vicious dark flames erupts swirling from your hands. Each creature in a 60-foot cone must make a Constitution saving throw. A creature takes 4d10 fire damage, 4d6 necrotic damage and have disadvantage on all strength checks for the next minute on a failed save, or half as much damage with no other additional effects on a successful one.

A creature killed by this spell disintegrates while their belongings are left behind .

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the fire damage increases by 1d10 for each slot level above 5th.