Create Demiplane of Darkness

Magical Darkness spreads from an unoccupied point on the ground that the caster can see within 5 feet and fills an enclosed space in 1d4 rounds. Darkvision can’t see through the magical darkness, and nonmagical light can’t illuminate it. This space may have entry points such as doorways however it can not exceed a size larger than 50x50 feet without being cut off by a boundary of some sort. If the spell is cast in the open or within a space larger than 50x50 feet the spell fails.

Any creature that starts their turn within the magical darkness is transported to a demiplane much bigger than the original room. This demiplane, its appearance, properties, and any illusory effects of the demiplane can be influenced during its creation at the GM's discretion. Any object that is within the magical darkness is also transported to the demiplane. This demiplane takes on some aspects of the space it was cast in regardless of any changes made by the spell and caster.

Any non-magical object that isn't being warn or carried within the demiplane created by this spell take on the appearance and behaviors of a living creature. If the remains of a once living creature enter the demiplane, the resulting illusion takes on the identity of the deceased creature, acting similarly and knowing everything it did in life.

Creatures trapped within the demiplane must succeed a perception check equal to the caster's spell save DC to leave the demiplane, exiting the room the spell was cast in. To dispell the darkness and get rid of the demiplane you or another creature must be within rage of the point in the demiplane that corresponds to the position the spell was cast (represented by a large pillar of magical darkness). This spell can not be dispelled outside of the demiplane it creates however effects such as Antimagic Field can temporarily lift the magical darkness and prevent creatures or objects from entering the demiplane.

Once the spell is dispelled any creatures within the demiplane are transported to somewhere within the space the spell was originally cast and any objects affected by the demiplane return to normal.