The Reign of Darkness
The first of the planes is the world in which humans and other mortals are born and have their existence. It is most simply known as the World. In reference to the planes, it is called the natural world, the mortal world, the middle world, or the material world, to distinguish it from the supernatural and metaphysical realms surrounding it.
The World occupies a special place at the center of the universe. It is the middle ground where the conflicts between gods and primordials, and among gods themselves, play out through their servants both mortal and immortal.