Death's Grasp

Grasping spectral hands sprout from the ground in a 10ft square starting from a point within range. For the duration, these hands turn the ground in the area into difficult terrain. 

Creatures in the area must succeed on a Dexterity saving throw or take 3d6 Necrotic damage and 1/2 as much on a successful save. Additionally, creature ending their turn in the area must succeed on a Dexterity saving throw or take 3d6 necrotic damage.

At higher levels: When you cast this spell using certain higher-level spell slots, the area covered increases. 20ft at 3rd level, 30ft at 5th level, 40ft at 7th level, and 50ft at 9th level.