Forcecage

An immobile, invisible cube-shaped prison made of magical force springs into existence around an area of your choice within range of the spell. It can be a cage or a solid box, your choice.

The cage form can be up to 20 feet on a side and is made of bars ½ inch in diameter spaced ½ inch apart.

If it’s a box, it can be up to 10 feet on a side, forming a solid barrier that prevents any matter from passing through it and blocks any spells cast from within or outside the area.

When the spell is cast, any creature that is completely within its area becomes trapped. Creatures that are only partially in the area, or those too large to fit within it, are pushed out from the center of the area until they’re completely excluded from it.

A creature inside the cage can’t leave it by nonmagical means. If a creature tries to use teleportation or interplanar travel to leave it, it must first succeed on a Charisma saving throw. On a success, the creature can use that magic to leave the prison. On a failure, the creature can’t leave and wastes the use of that spell or effect. The cage also extends into the Spiritual Realm, blocking ethereal travel.

This spell can’t be dispelled by dispel magic.