Chaos Flash

A bolt of pitch-black lightning made of negative energy flashes down from the sky onto a point you can see within range. Each creature in a 20-foot-radius sphere centered on that point must make a Constitution saving throw. A target takes 5d10 necrotic damage on a failed save, or half as much damage on a successful one.

The necrotic nature of the spell leaves the ground where it struck decayed and withered.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d10 for every other slot above 3rd.