There were at least 20 useful unique artifacts listed in Jaxon's first life that could be found in the Seraphis Kingdom. There were more, but due to the dire situation, they could only discover 20.
Jaxon already had three from that list: Boots of Aurora, Ore Machine, and Brave's Call. But those weren't the most useful ones. Artifacts that could help him reach higher levels were located in dangerous areas.
Molten Biome, Gas-less Biome, Liquid Fire, Negative Degree Mountain, and Lost Dungeon Kingdom were the most dangerous locations for undiscovered artifacts. They were distributed inconsistently, with each place having more than one.
The reason such areas existed in Seraphis Kingdom was because of the nation's unique location, which lay between the northern hemisphere, and western hemisphere, stretching to the equator. Such diversity in biomes within the kingdom was expected.
