Infinity Room

Infinity Room

Tier 1 Epic illusion

Casting Time: 1 action
Range: 120 feet
Components: V, S, M (a tessellation drawn upon a piece of vellum)
Duration: Concentration, up to 1 hour or permanent

You fabricate a 20-foot cube of illusory, impossible architecture and absurd geometry in a space you can see within range. The cube visibly distorts and warps everything within it, making its contents appear simultaneously everywhere and yet nowhere. Creatures outside the area have total cover against creatures inside the area, and three-quarters cover against creatures with truesight. A creature that is completely within the spells area cannot willingly leave by any means unless it takes an action to attempt a DC 20 Intelligence ability check. On a success, the creature is able to determine a route out of the infinity room by physical or magical means and can leave freely.

If you concentrate on this spell for its entire duration, you may choose to have the illusion become permanent. An instance of this spell made permanent in this manner immediately ends if you make another instance of this spell permanent.

At Higher Levels. When you cast this spell as a tier 2 Epic spell or higher, you increase all dimensions of the cube by 10 feet for every tier above tier 1.

Ref: ELCR p97