Field of the Unquiet Dead

Create a 40-ft. radius field of restless spirits centered on a point within range. The area is difficult terrain for enemies. When an enemy enters for the first time on a turn or starts there, it must make a WIS save, taking 33 (6d10) necrotic damage and becoming frightened until the start of its next turn on a failed save, or half damage only on a success. Undead you control ignore the terrain.