Elzik
Beautiful bonding! An idea for immortality for her, as far as I know he should still have the finger bones of his arm when it was ripped off, He should forge those into a Celtic knot, heated by both their magic, and quenched in both their blood. A ritual of bone, magic, and blood, tying her life to his. This way he doesn’t have to create a mortality, he is simply tying her life to his already immortal life. And in order to balance everything out in a ritualistic way, her in mortality would be tied to the newly forged pendant, if broken she would age like she would have before the ritua. It seems that for large and powerful rituals like this, there needs to be some cost or anchor point, and since immortality isn’t being created, simply tied to one who is already inmmortal, I think an anchor point should be all that’s needed in this case. At least in my opinion LOL.