Tether

Targeting one creature of your choice within range you reach out and attempt to tie their essence to your current plane of existence. The creature must make a Charisma Saving throw against your Spell Save DC. On a failure, choose one or both of the following effects.  

Native to the Plane.  For the duration of the spell, the creature is immune to the effects of banishment and any other banishing effects.

Anchored. For the duration of the spell, the creature cannot teleport, willingly or unwillingly. This includes via plane shift, etherealness or misty step. Any means of teleportation automatically fails until the duration ends or the effect is dispelled due to the invisible magical tether to a point on the plane.    

 At Higher Levels. When you cast this spell using a spell slot of 7th level, it's duration is 8 hours. If you use a spell slot of 8th level, its duration is 24 hours and if the spell is cast with a 9th level spell slot the effects persist until dispelled.