The tenth stage of the "Van Kanigem" tournament.

Sten... damn it! Save your fantastic deductions for somewhere else, or at least not on me! Am I making myself clear? Does a building called the Mage Guild, level 2, not tell you anything?! Apparently not! So, sometime when you have free time, gather your thoughts, which, as I've noticed, aren't very many, go into Heroes 5, enable the save from a tournament, and try, TRY! to build this rather useful building. Then, in the magic window (Mage Guild), select the bottom tab. And there, try to examine one of the spells. You'll be very surprised, of course. I know it's very difficult to do, but try it for your own development.

Added 1 minute ago
Yes, restarting the map is prohibited so that all participants have equal conditions.