The Doors of Oerth
The Fading Lands are regions where demiplanes intersecting the world of Oerth. They may have been created by wizards, gods, and other powerful entities. The laws of magic and nature may be different in the Fading Lands than they are in Oerth.
Known Fading Lands
The Isle of Dread – An island chain in the Azure Sea known to slip between multiple worlds, at least three are documented, where many practitioners of druidic magics are known to have power over the dead.