Dal Quor

Dal Quor, the Region of Dreams, is a plane that mortals visit when they sleep. The plane is the home of the Quori, psychic symbionts with intentions to conquer Eberron. Dal Quor was irrevocably torn from its rotation in the Age of Giants in order to stop the Quori invasion. Since then the only way to reach Dal Quor from the Material Plane is through the psychic projection of dreaming. The Quori claim the "center" of Dal Quor as theirs, where they rule supreme. However, most dreamers never reach the realm of the Dal Quor and visit only the fringes of the Realm. While there, they may be left alone, or they may be the subject of manipulation from inhabitants of Dal Quor. Under normal circumstances, creatures in Dal Quor cannot harm dreamers; however, it is possible for a dreamers' "dream self" to harm quori. Thus, the Quori prefer to attack using tricks and manipulation.
Since its severing from Eberron 40,000 years ago, there are no manifest zones to Dal Quor on Eberron anymore and it is always considered remote.