Reincarnation Myth

Reincarnation at its core works by the death of ones original body prompting the "limbo" body to reinhabit the duplicate body.

Often said duplicate body will be in a child version of the adult body, and is considered a dictinct entity from ones offspring.

You offspring, if you have them, is tasked with guided your "limbo" body to the new body.

In general the duplicate body will be made by a priest in the town you currently reside in. And thus those whom travel a bit will often be switcehd to the duplicate body after the death on a previous adventure in the new town they visited.

Here the goal becomes less ending the cycle of reincarnation, but rather learning from ones mistakes in a previous incarnation. Those whom were executed a lot of previous bodies, are considered "bad omens", while those whom died of old age, and considered the best "good omens".

SOURCES OF HORROR ALA BAD OMENS

Being unable to secure a duplicate body as a punishment. – dark preist / revenge
A lack of children to care for the duplicate. – infertility / stillbirth.
Having a child whom had a grunge against the adult version. – executioner of Karma
Town with duplicate body is abandoned, leaving duplicate unattended. – prisoner in black

Generally such storytellers are those on their way out, or constantly bedridden. Whom seek to warn society about the dark preist, the stillborn baby, the executioner of karma, and the prisoner in black who can sometimes be found in abandoned town, usually as a result of disaster like a collapsed mineshaff. Often you will also have anti-thesis to the main bad omens: preist in white, the infant, the warden in white, among other assistance.

The dark preist is nuetralized by the preist in white, the stillborn is nuetralized by duplicate infant, the warden can free the prisoner in black.