Death's Grasp

Grasping spectral hands sprout from the ground in a 10-foot square starting from a point within range. For the duration, these hands turn from ground in the area into difficult terrain. Creatures ending their turn in the area must succeed on a Dexterity saving throw or take 3d6 necrotic damage from the spectral hands.

At Higher Levels. When you cast this spell sing certain higher-level spell slots, the area covered by the spell increases. With a 3rd-level slot, the area covered becomes a 20-foot square. With a 5th level slot, the area covered becomes a 30-foot square. With a 7th-level slot, the area covered becomes a 40-foot square. With a 9th-level slot, the area covered becomes a 50-foot square.