Headmaster and Lieselotte in “Lost Technica and Problem Solving”

Well well well, I can tell by the look on your face you can see it now. May I present my little grimoire. It's called Solomon's Gate.

Well I'm honored. Only people who possess a certain level of magic can see it, right?

Yes, that's right. But I wouldn't recommend looking at it for too long. Even some of the most highly ranking mages have gone insane from staring at it.