Comment by Galactic Navy Officer on Cruel Void

@Cruel Void For prose, try the Deverry books by Katharine Kerr. Dweomer is based on kabbalistic and Celtic beliefs, among others, but is its own unique system. It's also the series that introduced me to reincarnation as more than do good/reincarnate higher, do bad/reincarnate lower. While reincarnation can result in ties to other people and wyrd (not a typo), it's more "the ties that bind beyond death" then karma.

Edit: Make sure you get the author's edition of Dawnspell and Darkspell, not the editor's edition. Her editor at the time made a lot of changes to them, especially Darkspell, that Kerr was not happy with, so when she got the chance, Kerr reissued them with the story she originally meant them to have. And they're a lot better than the editor version.