It's difficult for Thane to physically look surprised. His expression scarcely changes too drastically, but with the way he glances between the Loki going back to the sofa and the one still standing beside him is a pretty good indicator that the man is surprised.

"I would ask if you're using a hologram, but I'm quickly beginning to learn there are some things in this city I can't simply explain away." That and the man professed himself a master of magic. Still a strange thought to have to process. That being said, "I'm curious." In other words it's fine.