I believe this is already integrated with the soul mate system. If your soul mate falls on the opposite affinity of light/dark then you, you'll be destined to kill each other regardless.
I believe this is already integrated with the soul mate system. If your soul mate falls on the opposite affinity of light/dark then you, you'll be destined to kill each other regardless.
Thanks for your reply. I must have missed that detail when reading about soul mates.
Still, if I understand correctly, that is pre-determined and each soul has just one soul mate. There difference here is that player actions can draw two souls together (for better or worse) over several lifetimes, and these bonds can be developed with multiple souls. It also would work with creatures if they have souls, too.
Maybe there's already enough interesting mechanics around souls that this wouldn't be a notable addition, but it was something that I was thinking about (initially from the high fantasy point of view, with a hero and a powerful enemy like a dragon/sorcerer, but then generalizing).
Edit: I guess another way to characterize the difference between my idea and the existing soul mate mechanics is that the existing mechanic is correctly referred to as a kind of Fate while what I am describing might be better called Karma.