Reincarnation

Reincarnation is when an atman moves from one embodiment or phylactery to another.

Transmigration of the Soul
Upon death, most inhabitants of the Empyrean worlds have their atmans reincarnated into a phylactery, where they are deposited by theurgs into an afterlife dimension for eternity. In rare cases, theurgs destroy or consume atmans. If they are not, and find a way to placate the reigning theurg, an atman may exit the death-interval by reincarnating into an embodiment. Embodiments are often provided by an outside source, and include living hosts, artificial sheaths, and nanite swarms.

Religious Portrayal
Most religions forbid reincarnation, or only allow certain instances. Often, the process is considered unnatural, causing a fundamental ruination of the soul, citing psychic decoherence as evidence. Otherwise, reincarnation may be seen as a means of escaping damnation.