Quote Originally Posted by Seika View Post
Yeah, magecraft specifically loses power when it's revealed. Everyone draws from the same, finite source. If one person drew ten, two can only draw five: that's the example given.

Even assuming that didn't hold, I'm ... 95% ... sure it's still a no. It's quite specific that even saving the world doesn't qualify you as a hero any more, because that's happening all the time. Fame is required, but so is the deed itself (or, in this case, the exceptionality of the deed).
Well even if everyone knows about it it doesn't mean everyone can use it, so they wouldn't draw from the source. Its like any magus worth their salt knows about at least the second of the 5 true magics and yet it doesn't weaken, and that's because Zel is the only current user of it.