[Riku takes the bottle without hesitation, muttering a quick thank you. For a moment he stops to glance back at the fight. Was nothing wearing him down?

Well, let's see...]

Okay, so that's not entirely true. When I first got in there, he got blasted with some fire and lightning spells, and those seemed to do some damage. We even managed to knock him over the edge, but he launched himself back up. That's when the magic stopped working and when he started hiding under that stupid barrier.