Void Geysers

You create 3 15-foot-cylinders within 300 ft of you, the spheres cannot overlap. All targets within the sphere must make a CON save. On a fail save, they take 10d12 Necrotic damage and have the Blindness condition for 1 minute. On a successful save, they take half damage and aren't affected by the Blindness. If they make a critical fail save, they get teleported to the Abyss for 1 day.

At Higher Levels

The amount of Geysers you create increase by 1 for each spellslot above 7.