Well, there's no better place to put a true murderer in this world. Even when my crime was perfectly justified, I still have to be put through this misery, forever entangled in a dance with the devil. Forever imprisoned in an endless darkness, condemned to suffer for eternity.
Unlike his mother, who had stopped growing after wielding the holy sword, in theory, Mordred could continue to grow and even reach the level of his mother's version of Lancer.