Blackout

You point to a place within range, and a mass of magical darkness begins to grow from it. Each creature within a 20 foot radius sphere centered on that point must make a Wisdom saving throw. On a failed save, a creature takes 6d8 psychic damage and is blinded, as their senses are overloaded and they hear and feel horrific things in the darkness. On a successful save, a creature takes half as much damage, and is not blinded.

After casting this spell, you may hold concentration on it, and keep it as a field of magical darkness. As a bonus action you may either increase the radius of the sphere by 10 feet to a max of 40 feet, or move the center of the sphere 30 feet in any direction.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d8 for each slot level above 5th.