7th-level Spell: Confinement

Aspetheurgy (Evocation)

An immobile, invisible, cube-shaped prison composed of supernatural force springs into existence around an area you choose within range. The prison can be a cage or a solid box as you choose.
A prison in the shape of a cage can be up to 20 feet on a side, is made from 1/2-inch diameter bars spaced a 1/2-inch apart, and provides half cover.
A prison in the shape of a box can be up to 10 feet on a side, creating a solid barrier that prevents any matter from passing through it and blocking any spells cast into or out from the area.
When you cast the spell, any creature that is completely inside the cage's area is trapped. Creatures only partially within the area, or those too large to fit inside the area, are pushed away from the center of the area until they are completely outside the area.
A creature inside the cage can't leave it by mundane means. If the creature tries to use teleportation or interrealm travel to leave the cage, it must first make a Charisma saving throw. On a success, the creature can use that magic to exit the cage. On a failure, the creature can't exit the cage and wastes the use of the spell or effect. The cage also extends into the Spiritual Realm, blocking ethereal travel.
The cage has an AC of 10 + the spell's level and has 20 hit points per spell level. This spell can't be dispelled by Dispel Magic.

• At Higher Levels. When you cast this spell using an 8th level spell slot or higher, the cube's AC and hit points increase as determined by the spell level used.

Source: SDS (Forcecage)

• Casting Time: 1 action
• Range: 100 feet
• Components: V, S, M (ruby dust worth 1,500gp)
• Duration: 1 hour
• Ritual: No