)
Hmm... Maybe. But somehow I doubt that because of the chronology (ha ha ha, good joke) in the MLP universe. For as we know, before Celestia and Luna, the unicorn magicians moved the sun and moon. I somehow got the impression that Discord became a problem only after that. But as we do not have any clear statements in this regard, this is of course quite possible. But wouldn't that be a little too vicious for the Lord of Chaos? I mean, we know he's a trickster, but he isn't actually really evil. Well, I admit that justified doubts remain, of course. ;-)