Grasping ethereal chains shoot from the ground in a 20-foot square starting from a point within range. For the duration, these chains turn the area into difficult terrain. A creature in the area when you cast the spell must succeed on a Strength saving throw or be restrained by the celestial chains until the spell ends. A creature restrained by the chains can use its action to make a Strength check against your spell save DC. On a success, it frees itself.