Got it.  I don't really see transforming lead into gold as something that'll happen during the game, although it is supposed to have some ability to break the rules.  (and of course, be done only with highest GM permission)  Another possibility for lead into gold is that it could transform a dark one into a human, but that's quite likely also impossible.<br/><br/>(Any of these crazy things, of course, require posession of the philosipher's stone, which may or may not exist and is loosely identified with the holy grail.  All things that even a wyvern doesn't have a hope of owning)<br/><br/>Of course, the main point of alchemy is that you never quite seem to be able to get to where you were planning on going.  :-)