3rd-level transmutation
Casting Time 1 action
Range 120 feet
Components V S M (Obsidian)
Duration Instantaneous

Choose a point on the ground that you can see. A 20-foot cube centered on that point becomes difficult terrain, and each 5-foot portion requires a minute to clear by hand. Each creature in the cube's area must make a Dexterity save. It takes 3d12 bludgeoning damage on a failure, or half damage on a success.

At Higher Levels: The damage increases by 1d12 for each slot level above 3rd.