Tether

Pointing at a location of your choosing, a writhing mass of tendrils erupts. All creatures within a 5 foot radius must make a dexterity saving throw. A creature takes 3d6 necrotic damage and is knocked prone on a failed save, or half as much damage on a successful one.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d6 for each slot level above 2nd.