The Start of the Test... Entering into A Pocket World
"Gather up now, I will open a door to a pocket world recently discovered by the academy. This pocket world is a mystery to us, and so part of your mission inside, and part of the analysis of your performance, will be to gather intel about the world there.
This door isn't stable, yet, so the places you will all appear at will be random. Any mages outside the circle of one hundred meters won't appear at the same place as those inside it, so a word of advice to all, regroup, and make each group not exceeding one hundred and fifty mages.
When you enter the world, your main task is to stay alive for a whole month. As the world is recently discovered, it's tasked for you to build outposts and camps to be used later by the academy.