I don't do either of those things. I set crystals on fire with my dreamotion energy and it'll glow like a candle. You can use them as a light source too but it feels like such a waste.

[He frowns and sighs.]

So far I can only charge them once and save it for later. They're nothing like Shionne's healing artes though. Here, check it out.

[Alphen hands Law one of his charged fire crystals. When he holds it he should feel more energized and refreshed. ]