Demand of Supply
Xoriat, the Realm of Madness, home of the Daelkyr, is beyond description. By merely visiting the plane non-natives risk having their minds shattered at the sight of the chaos. Alien architecture and unspeakable inhabitants exist in the expanse of a highly morphic plane with no gravity and wild magic. Time flows more quickly on Xoriat- one minute there equals one hour on the Material Plane. Xoriat’s last coterminous phase was nearly disastrous for the world of Eberron. Daelkyr swarmed from Xoriat into the Material Plane in an attempt to conquer it, causing the eventual collapse of the Dhakaani Empire. Only the efforts of the Gatekeepers, who sealed the dimensional portals and placed many dimensional seals on Xoriat, ended the chaos. Xoriat is as of the present unable to become coterminous with the Material Plane again.
When Xoriat is coterminous to the Material Plane madness literally bursts forth. Xoriat has not been coterminous since the Age of Monsters when the Gatekeepers sealed off the dimensional portals putting an end to the Daelkyr’s terrors and sealing Xoriat away from the Material Plane. The Gatekeepers continue to protect these seals, but if they were to fall, there is no telling what the world of Eberron might see in the future.