[Amal stares blankly at Narsus because he understood maybe two words of that.]

I... [Actually, maybe he shouldn't remind Narsus that he's not from this universe.

He waits patiently for Narsus to figure out that he's the one doing it instead. At the very least, pretty lights are fun to watch. And as the slow realization kicks in, Amal tries to be the cheerleader.]

Looks like it. It's a neat trick! Not the kind of magic I usually see, but certainly not worth dismissing. You can do a lot with light.