The third round began immediately the very next day. For the third round the participating mages needed to do a simple quest, which was to explore a dungeon called the "Resting Ground of Great Hero". This was technically a S rank Dungeon but S rank monsters did not appear before the very last floor. So it was safe for lower rankers to explore it if they made sure that they did not go to the last floor.
There were a few A rank monsters here and there but all of them were mostly staying in one area and did not roam around. The magic guild was giving everyone a map of the dungeon so that the weaker participants would be able to stay clear of that area.
This Dungeon was actually excellent for this test as it had many traps that needed the expertise of a mage to solve. Thieves were not very useful here because of those traps. So all the mages would need to do their very best to explore it. They were also not allowed to make teams.