Terramor's Tectonic Grasp

You choose a Large or smaller target no more than 10 feet above stone or loose earth, even beneath brick or flooring within range. Large slabs of earth and stone jut out from the ground, trapping the target where it is. The target must make a Dexterity saving throw. The target is restrained for the spell’s duration on a failed save. The targets space becomes difficult terrain.

As an action, you can crush a restrained target. It takes 3d8 bludgeoning damage. You may also choose another target. They must repeat the process listed above. If you already have a target restrained, they are no longer restrained, as you are no longer concentrating on their binding.

To break out, the restrained target can use an action to make a Strength check against your spell save DC. On a success, the target escapes and is no longer restrained.