Edward in “Unfinished Business”

Edward

The celestial stone that destroyed the city of Xerxes in one night. The grand elixir, sealed away by the Eastern Sage. It goes by different names, but it's always the same thing: some kind of object that amplifies alchemy. And that's the Philosopher's Stone. If we could just get our hands on it somehow, I might be able to get your body back... Damn books! They tell us everything but how to find it!