"I think it is. The mage wouldn't have used it if he was in danger from it." Magisters are many things, and that includes being shrewd and unwilling to put themselves in harm's way. That's what their slaves are for.

"Don't worry, Sina. I've been using it for a couple months now." She flips to the next page, showing a drawing of Mythal's tree. "This was the style of these golden gates throughout the next room. Each had a lever behind it."