Crawling Chaos

The caster points at location within 60 ft. A cloud of roiling darkness and inky tendrils explodes in a 15 ft. radius. The spherical cloud moves away from the caster at a rate of 20 ft. per round. The ground is considered difficult terrain. Creatures starting or ending their turn in the cloud take 4d6 necrotic damage (wis save, caster DC, for half damage) and are blinded until they leave the sphere. Magical light does not dispel the darkness. This spell affects plants and creatures.

For every spell slot above level 3, increase the damage by 1d6.