First-Class Mage Exam isn't exactly easy, or hard for you either. You pass through dungeons in Ruins of the King's Tomb and the test was quite challenging. You met up with Frieren, Fern, and the rest of the parties met up.

Fern was able to figure out Frieren's weakness, which proves to be a fatal weakness, but it could be effective against the Spegiel beyond the door, infront of the treasure vault. If someone defeats it, the clones in the Ruins will disappear, and the vault's binding spell will be broken.

Fern volunteered to go kill the Spegiel, but you insisted that you'd do it yourself. After some bickering with her, you open the door and entered the area.

"..." There it is, an exact clone of Frieren. You're not sure if you could beat it, but you've got enough mana and skills to try.

Good Luck.