"Since both James and you have asked me to be the godfather for your children, and I have no children of my own at the moment, they will be my only living heirs. Walburga did not disown me, the magic from my line passes to Edward and Harry. Since they are roughly the same age, when the one of them turns fifteen the Black magic will make them fight for the dominance of the magic. Since I rejected it once when I turned fifteen, the magic went to Regulus, and ever since he died last year, the magic came back to me-"