Editing Setting:Planescape Improvement Project (section)

===Bone/Death===
Imagine the negative energy plane, Hueco Mundo from Bleach, the Shinigami world from Death Note, the Soul Cairn from TES, and every other world of the undead you can think of rolled into one.

An entire plane made of bones and the ruins of destroyed civilizations. Unlike the negative energy plane, which this plane is the replacement of, it is not instantly deadly to the living, but it is very hostile to them. Undead creatures are the dominant form of "life" here. Every kind of undead creature is found here, also some scavenging animals and decomposing fungi. The undead form whole ecosystems here, with stronger monsters preying on the weak. The majority of undead creatures here are of the corporeal kind, but ghosts and other incorporeal undead are common as well. Vampires and other blood-dependent undead can survive here as a vast river of fresh blood flows across the plane. The plane of bone is not all wilderness and ruins. There are many large cities of undead here, and a few of them are tolerant enough of the living to be nice places to visit. But many powerful villains also make their homes here. The infinite supply of bones and naturally occurring undead makes it a perfect place to raise an undead army. Several powerful fiends have tried to conquer the plane, but have always been repelled, both by rebellious undead not wanting to lose their territory and by living heroes. This plane may have some connection with the [[Elder Evil]] Atropus. Maybe he was once a part of this plane, or perhaps he is imprisoned in the plane's core, or acts as the plane's moon when he isn't out destroying worlds.

====Traits====
* The atmosphere is hard to breath
* Plants (except undead ones) struggle to grow here because it is never daytime, and there is little water
* Casting certain spells, particularly healing and resurrection and some spells that affect plants, attract the attention of nearby undead creatures and have a chance of failing. This effect gets stronger while underground.
* Most necromancy spells and some that harm the living are strengthened and easier to cast. This effect gets stronger while underground.
* Soulless undead creatures that survive here long enough can eventually awaken and develop a new soul. They tend to copy the alignment of the people they have been around. Attempting to resurrect an undead creature inhabited by a soul that isn't the original has unpredictable and possibly dangerous results.
* Over time, Undead creatures can also transform into other kinds of undead. A simple skeleton may eventually become a lich, although without a phylactery. Non-corporeal undead can also slowly form bodies for themselves out of the bones and rotting flesh of the plane.
* Souls that end up on this plane first appear as weak ghosts.
* Living things that die here immediately come back as undead, usually zombies. Corporeal undead with souls, and living things whose bodies are destroyed, come back as incorporeal undead.
* Incorporeal undead cannot move on to their proper afterlife unless they leave the plane.
* It is always night time and the full moon is always in the middle of the sky, no matter where you are on the plane. This full moon strangely does not trigger the transformation of lycanthropes. Occasionally, the moon turns red, and bad things happen.