Talk:Arthur Pendragon (Prototype)/@comment-134.117.28.88-20170313173916/@comment-28209103-20170314063644

I think "The Battle must be one to save the world" is the requirement to release Arthur seal..

Artoria Excalibur also have some kind of limitation placed on it and it can only be released to protect the planet.. It is powerful enough that the superweapon Altera are afraid / feel threatened by it. I'm guessing it's full power are nothing to laugh at either.

If Proto-Calibur are sealed by Round Table then Excalibur are sealed by the planet itself, it is a sword forged by the planet afterall.