The Rune Master was having fun. He had nothing to do anymore after he talked to Ezra, so he had all the time in the world to mess up with these guys before taking care of them.
However, the route was also meant to make it harder for them to understand where they were, or to retrace their steps back in case they found out something was wrong.
Soon, he would lead these guys on a wild goose chase they would never forget, the last of their life, of course.
With a casual motion, Sebastian turned into another narrow alley, his cloak billowing behind him.
As soon as he was out of sight, he quickly made some runes and crafted an illusion of himself. The doppelgänger was indistinguishable from its creator.
Only tier two and higher thespians could see the subtle ripples that went through it, and that sold it as a fake.