An immobile, invisible, cube-shaped prison composed of magical force springs into existence around an area you choose within range. The prison is a solid box.
The prison 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 of 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 com- pletely outside the area. The inside of the prison is divorced from the magical energy that suffuses the multiverse. Within the prison, spells can’t be cast, summoned creatures disappear, and even magic items become mundane.
Spells and other magical effects, except those created by an artifact or a deity, are suppressed in the prison and can’t protrude into it. A slot expended to cast a suppressed spell is consumed. While an effect is suppressed, it doesn’t function, but the time it spends suppressed counts against its duration.
Targeted Effects: Spells and other magical effects, such as magic missile and charm person, that target a creature or an object in the prison have no effect on that target.
Areas of Magic: The area of another spell or magical effect, such as fireball, can’t extend into the prison. If the prison overlaps an area of magic, the part of the area that is covered by the prison is suppressed. For example, the flames created by a wall of fire are suppressed within the prison, creating a gap in the wall if the overlap is large enough.
Spells: Any active spell or other magical effect on a creature or an object in the prison is suppressed while the creature or object is in it.
Magic Items: The properties and powers of magic items are suppressed in the prison. For example, a +1 long sword in the prison functions as a nonmagical long sword.
Magical Travel: Teleportation and planar travel fail to work in the prison, whether the prison is the destination or the departure point for such magical travel. A portal to another location, world, or plane of existence, as well as an opening to an extra-dimensional space such as that created by the rope trick, temporarily closes while in the prison.
Creatures and Objects: A creature or object summoned or created by magic temporarily winks out of existence in the prison. Such a creature instantly reappears once the space the creature occupied is no longer within the prison.
If a captured creature tries to leave the cage by using teleportation or inter-planar travel from an effect that isn’t a spell, it must first make a Charisma saving throw. On a success, the creature can use that effect to exit the cage. On a failure, the creature can’t exit the cage and remains imprisoned. The cage also extends into the Ethereal Plane, blocking ethereal travel.
Spell and magical effects such as dispel magic and purge magic have no effect on the prison, and an antimagic field doesn’t suppress it.
* - (a pinch of powdered iron and ruby dust worth 10, 000gp which the spell consumes)
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