Clamor Noctus

Yelling out with a roar, you summon the essence of pure night that takes the form of continuous destructive sound waves that create darkness wherever they strike. The caster is not allowed to change the trajectory of the spell once it has started.

The target must make a wisdom saving throw whenever they start their turn in the affected area or are in the area upon its creation. The target takes 5d10 damage and is blinded on a failed save, or half as much damage without being blinded on a success.

At Higher Levels. When you cast this spell using a spell slot of 8th level or higher, targets take an extra 2d10 damage for each slot level above 7th.