User blog comment:Merlinmania/Arthur's Bane/@comment-4814726-20120807030757

Bane is death. But as Loki says below Mordred doesn't seem to stalk like a ghost. Unless it is revealed from the beginning that Mordred is a stalker... I hope he becomes a knight instead of him just appearing as a knight at the start. But either way Mordred doesn't go on ALL the quests hts, with the knights, so maybe his betrayal is revealed earlier on. I just wish all of these betrayals would be explained more. I mean, sure we see Mordred ending up with a bunch of renegades and evilly smirking, but we don't have ANY backstory on WHY. And Aithusa's turn is even worse becuz there was ABSOLUTELY no reason at all for her to be Morgana's evil ally. We can theorize on why she saved morgana's life, but not why she went against Merlin and Kilgharrah, who are essentially her only surviving kin!

So, bane. We know that Arthur's bane is Mordred. But perhaps it's more abstract. Perhaps there is some important moment, a decision, or test, that "stalks him like a ghost". And his pass or fail determines whether or not Mordred kills him. Like with the unicorn test. Maybe it comes down to Arthur accepting magic, and if he doesn't, he has to be killed.