Editing Kyuad's Lorebook (section)

===The Price of Death===
With nowhere to go, the spirits of the dead far too often remain tethered to their bodies or emerge as the Lost, dangerous incorporeal undead with an unpredictable but often dangerous attitude towards the living. When a creature of aberration, dragon, giant, humanoid, magical beast, or monstrous humanoid  and a suitable amount of intelligence, will and drive to survive, the soul of the deceased can possibly depart its body and vanish into the maelstrom of trapped but harmless spirits that wreath the world of Aryth like an incorporeal halo. When the stars are right the deceased is doomed to rise as Fell in less than a week unless it is beheaded or its body is destroyed by fire. There is a small/unlikely chance that the unfortunate soul may rise immediately, and despite whatever lethal wounds may be evident, the newly undead may be completely unaware that he has just been killed. Companions may even try to aid their fallen friend, but these efforts prove useless and it will not be long before those companions realize something is very wrong.
In extremely rare occurances something potentially worse happens. Regardless of the how the body is disposed of, it becomes destined to rise as a tormented shade, one of the Lost, within a year of the person’s death. The dead creature rises as a ghost if its mind is right; otherwise, it rises as some other form of incorporeal undead.