Soul Bonds and Snakes

Harry and Daphne save each other's lives. Incurring mutual Life debts. Which then starts a unique ritual. They will be changed, turned, and made stronger. This is AU and set at the end of HBP, with most everything following the books, but a few key differences that are mentioned in the beginning. HP/DG, BZ/HG, NL/TD. Manipulative and misguided Dumbledore Molly/Ron/Cho/Gin bashing