There is a hidden boss battle in the Nord Mines right near the beginning of Metaphor: ReFantazio, a battle against a powerful dragon. It’s a tough fight, but is it worth the loot?
Short answer, yes. Most definitely, do not miss it, that’s the level of loot you receive for this stage of the game. There are two different elements of reward for this battle. Firstly, the immediate rewards for defeating the dragon and, secondly, the rewards for raiding the dragon’s nest after the battle.
For defeating the dragon, you obtain the following:
Experience Points: 263
Archetype XP: 210
MAG: 1,000
Money: 1,000
Spoils: 1x Amethyst
Which isn’t bad. You get some good cash and experience points, but the real treasure is from looting the dragon’s nest. There you will find:
Grand Iron: 1
Glossy Fur: 1
Onyx: 1
Dragon’s Indignation
You want to pay special attention to that final item, the Dragon’s Indignation. This is a very powerful Epic Greatsword with 111 Attack and 95 Hit. To put that into perspective, the best Greatsword you can obtain up to this point is 80 Attack.
The weapon can also be enhanced further through the Purification Process. To Purify the Dragon’s Indignation, you need to find a church. The earliest church you can find is located in Grand Trad, which is accessible on 06/11 Flamesday, just before the King’s funeral.
Once purified, the sword becomes X.