Earth Shift

The ground in the selected area begins to shift and change. The ground turns to quicksand making it difficult terrain. Also, each creature in the area affected must make a Dexterity Saving Throw or become restrained for the duration. On a successful save, the creature is not restrained but is still subject to the difficult terrain.

A restrained creature makes a Strength Saving throw at the end of each of its turns to end the effect on a successful save.