“ In the inaccessible plateau of Hor-Nushan, there was always little crime. But in late autumn comes a maddening wind, that can drive the best man crazy, if only for a short time, make him turn on himself or others. For murder, the locals have devised a special punishment: the murderer has to dig a well for the family of his victim. The area is very dry, and having a good well is a source of wealth and prestige. In this way, the murderer atones for his deed and repays the family; perhaps they even find peace.”
“ When you sleep, your soul briefly returns to the place where it was created/goes to when it dies, and seeks nourishment. Everybody's soul is created with a little link (or you could say a greater entity calls it back) to that place so that it can return easily, but upon death, the soul returns via that and annihilates the link as if returns.
Also, as an added thingy, you could say the entity supplying the link, or residue of the links themselves, (whichever) is the source of all arcane power.”