The new rule may need some revision. It just isn't very clear I guess. I thought that if it was possible to use any particular spell, attack, etc. throughout that person's gaming experience, it is fair game.

Just because someone couldn't use Black Magic at one point doesn't mean they didn't learn later in the game and shouldn't be allowed to use it now. Maybe you need to be more specific in what you are talking about, and use this Battle as another example.

Oh, and BTW, didn't get around to any research on Dante yet, I got my damn wisdom teeth pulled today, so I've been a little out of it.