Board Thread:General Discussion/@comment-1916997-20151012011036/@comment-25926288-20151012023650

8Rob wrote: I didn't understand why Emma needed a "hero" to pull out the Excalibur

I mean, Arthur already did it. And he was in Storybrooke. Why couldn't he just do it again?

Now I know. He was corrupted while being the king Yeah, I think it harkens back to the hat in season 4. Merlin must have put an enchantment around it so that the one who pulls the sword from the stone must be pure of heart or have not succumbed to the darkness (they just happen to be a hero, because why not?)