Chwinga Guardians

You call forth Chwinga spirits to protect you. Their spectral forms flit around you to a distance of 15 feet for the duration.

The spell affects all of the following creature types: aberration, celestial, elemental, fey, fiend, and undead; however, you can designate any number of these creatures you can see to be unaffected by it. Other creature types are not affected. An affected creature's speed is halved in the area, and when the creature enters the area for the first time on a turn or starts its turn there, it must make a Wisdom saving throw at disadvantage. On a failed save, the creature takes 3d12 force damage and is blinded until the end of its next turn. On a successful save, the creature takes half as much damage and isn't blinded. 

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d12 for each slot level above 3rd.