Fiction:Planes of Existence/Nightmare Region

"It is a sickness which has no cure."

The Nightmare Region is a plane of existence located within the Realm of Dreams which once served as 's prison and currently acts as a secondary nexus of. It's one of the two realms controlled by Shu'ulathoi, the second being.

Origin
The Nightmare Region was created in the aftermath of the War of Black Fog after Shu'ulathoi was trapped in the Realm of Dreams. Its existence is attributed to Shu'ulathoi's Entropic Energy contamining the Dream Energy of the Realm of Dreams and slowly converting it into a brand new plane controlled by the Corruptus lord. While at first insignificant in size, the Nightmare Region eventually expanded without control. Mortals and immortals alike were linked to it through their souls and began suffering from nightmares. This link with the rest of reality turned the Nightmare Region indestructable.

Second War of Black Fog
Shu'ulathoi did his best to escape the Nightmare Region and invade the Onuris Universe during the. During this time, the Corruptus' forces were at constant war against and his  servants. By causing destruction in the Onuris Universe through his servants, Shu'ulathoi would be able to create a powrful-enough rift in space-time which would allow him to leave the Region. During this time, the Region served as the real home of the, who could enter and exit it through their s.

Before Shu'ulathoi himself could leave, however, a team composed of, , , , , , , , and UNOL entered the Region and slayed Shu'ulathoi. This caused the Region to retract into a much smaller size and the space-time rift to be closed. Following Shu'ulathoi's revival in the hands of the, he was given control over Inferno and as such, the Corruptus presence in the Nightmare Region became restricted to lesser Corruptus demons.

Description
The Nightmare Region is a realm composed entirely of Entropic Energy. In a contrast to the Realm of Dreams, which appears as an abstract dreamy version of the person's memories, the Nightmare Region takes the form of the person's worst fears, phobias and nightmares. The Nightmare Region is infinite in size, but it is visible from inside the Realm of Dreams. Seeing it from the outside makes it appear much smaller than it actually is.

Access
To access the Nightmare Region, one needs to first access the Realm of Dreams to get to it. As the Region is completely composed of Entropic Energy, it is considered incredibly hazardous for unprotected beings. It is also highly nocive against Dream Energy beings, though powerful enough users can enter the Region and create Essence barriers to protect themselves.