Circle Pit

Negative energy ripples out in a 60-foot-circle radius from your person and skeletons erupt from the earth and start to run in a circle around you. Each creature in that area makes a Constitution saving throw, taking 6d8 Necrotic damage and 4d6 Force damage on a failed save or half as much damage on a successful one.

Each creature who enters or starts their turn in this space must make the save.

Using a Higher-Level Spell Slot. The damage increases by 1d8 and 1d6 for each spell slot level above 6.