Earthen Grasp

You cause the ground at a point you choose within range to erupt with grasping tendrils of earth and stone. Choose a 15-foot square of ground that you can see within range. The ground in that area becomes difficult terrain. Any creature that enters the area for the first time on a turn or starts its turn there must make a Strength saving throw. On a failed save, the creature takes 1d6 bludgeoning damage and is restrained until the start of its next turn. On a successful save, the creature takes half as much damage and isn’t restrained.

The spell’s damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).