Leave something behind? That doesn't happen with our magic; the most present risk is either missing your target entirely or doing precisely what I just did. It's a simple technique to master; my brother was barely a teenager when he finally mastered it.

[Ardyn seemed to falter briefly after having said that without thinking, hesitating a second before trying to recover.]

Ah--with a clear line of sight I could likely travel most of the main hallway.