True teleportation is not something he can do; but moving fast and seeming to mimic it? It's come up at least once or twice before, which is why he's trying to get handle on how he does it. A little duck of his head at the praise, and a smile. "I'm trying to...react, but also analyze how I react? If that makes sense? It's part of why I'm glad you made a course. So I can test myself."

It wasn't 'magic'--at least not like Celestia used, or even shinki spells. It was energy; Chi is what Hakkai called it, and that made sense to Trunks. It fluctuated at various times depending on what he was doing and how he was using it--at the higher speeds of his plain flight it was almost like a shimmery haze that was visible around him.