Plane of Shadows

The Plane of Shadows is a world in the multiplanar system. Formerly ruled by a king called the Potentate of Shadows, this plane's people -- primarily purple-skinned elves -- were deeply invested in the necromantic arts and devoted to exploring the possibilities of Void-based technology and magic. Among their innovations were powered armor and laser turrets, and they were avid explorers of the planes.

Over the course of a thousand-year war with the Plane of Fire, the Plane of Shadows expended most of its magical energy. Among the things its people developed in the last desperate years of the war was a means of extracting souls and transforming them into mind-controlling incorporeal undead called "Grey Goaders." The plane is now dominated by vast expanses of silvery sand studded with Void rifts and populated by dessicated, mostly dormant undead called "the slain."