The Plane of Shadow is a fictional plane of existence in the Dungeons and Dragons role playing game, under the standard planar cosmology.
The Plane of Shadow is also conterminous to other planes. With the right spell, a character can use the Plane of Shadow to visit other realities.
The Plane of Shadow is a world of black and white; color itself has been bleached from the environment. It otherwise appears similar to the Material Plane.
Despite the lack of light sources, various plants, animals, and humanoids call the Plane of Shadow home.
The Plane of Shadow is magically morphic, and parts continually flow onto other planes. As a result, creating a precise map of the plane is next to impossible, despite the presence of landmarks.
Furthermore, specific spells become more powerful on the Plane of Shadow. Shadow conjuration and shadow evocation spells are 30% as powerful as the conjurations and evocations they mimic (as opposed to 20%). Greater shadow conjuration and greater shadow evocation are 70% as powerful (not 60%), and a shades spell conjures at 90% of the power of the original (not 80%).
Despite the dark nature of the Plane of Shadow, spells that produce, use, or manipulate darkness are unaffected by the plane.
In the Urban Arcana and Shadow Chasers campaign settings, the plane of shadow is simply known as Shadow. Due to an unknown reason, creatures from other material planes (As in Dungeons and Dragons Campaigns)) can be randomly ripped from their current plane of existence, and deposited on Earth with no memory of their previous home, and fluency in the local language (which is always the same as Common). This is called The Gift of Lethe.