Tendrils of Cathos

You conjure a 5-foot-diameter sphere of wet, sticky tendrils 5 feet above a point on the ground you choose within range. The sphere hovers in place.

When you cast the spell, squirming tentacles lash out from the sphere in a direction you choose. The tentacles form a line up to 60 feet long and 10 feet wide. Each creature in the area must make a Dexterity saving throw. On a failed save, a creature is coated in slimy ichor. It takes 3d6 psychic damage and 3d6 acid damage, and slides 30 feet towards the sphere. A creature that ends this move within 5 feet of the sphere takes an additional 2d6 psychic damage and 2d6 acid damage. On a successful save, a creature takes half as much damage without sliding towards the sphere.

At Higher Levels. When you cast this spell using a spell slot of 5th level of higher, the initial psychic damage and acid damage increases by 1d6 for each slot level above 4th.