Ball Lightning

A bright blue streak of light flashes from your pointing finger to a point you choose within range and then blooms with a clap of thunder into an explosion of Lightning. Each creature in a 30-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 8d10 lightning damage on a failed save, or half as much damage on a successful one.

The lighting spreads around corners. It ignites flammable objects in the area that aren't being worn or carried.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 2d10 for each slot level above 5th.

Ball Lightning creates a burst of thunderous sound that can be heard up to 100 feet away. Each creature within 30ft radius, other than you, must succeed on a Constitution saving throw or take 5d8 thunder damage.

The spell’s damage increases by 2d8 when you cast it at 7th level and 4d8 additional damage and at 9th level.