As soon as you finish the game and the credits have rolled, you will receive several items where one of them will allow you open up a new dungeon that is called Magnus Zero.
Legends have said that those who seek out the six Devil’s Beasts and obtain the six weapons, the almighty Golden Mage Knight appears and challenges those who appear before him. If you are planning to get the Platinum Trophy of the game and learn every single artes for Jude, taking down the Golden Mage Knight is one of the steps that you need to do.
Assuming you finished the Devil’s Beasts sub-event that the man gave you in Sapstrath Seahaven, you may have noticed that the weapons you have received from the beasts aren’t the most powerful ones. Well, that’s because you will need to take down the almighty Golden Mage Knight to unlock its true power. Using that Golden Key you receive after the credits have rolled, you can enter the Magnus Zero at Fezebel Marsh and fight the Knight at the very depths of the dungeon.
The moment you enter Magnus Zero, you will see that you have arrived in Fennmont. Wait, is it really Fennmont? Well not really. In Magnus Zero, you will come across the areas that you have been before and fight numerous monsters. By entering the green portal, you advance to the next state. To reach the Golden Mage Knight, you have to enter any of the “green portals” around ten times. It doesn’t matter which green portals you go to since it will lead you to one path.
If you finish the game and you are under leveled, you will be able to use the Magnus Zero as a leveling ground to get you to at least level 80-90. Defeating the monsters in Magnus Zero isn’t really necessary to face the Knight. You can skip the monsters and just proceed to the green portals – it’s really your choice but taking down these monsters, along with an experience boost will get you to the max level in no time.
In addition in using the Magnus Zero as your leveling ground, take this opportunity as well to gather up materials to fully max out the shop levels. Each of the materials you get from this dungeon gives a lot of points. Aside from the materials, you can also get a lot of the Jet Black Feathers in the game.
When you reach an area that looks exactly like Bermia Gorge, save your progress as that’s the last area before you get to fight the Golden Mage Knight.