An elemental chaos
Reigner felt like the dungeon wasn't favoring humans without a reason. Of course, their appearance in the earth played some part and had a little favoritizm, but the dungeon's purpose was always related to influential people.
The prodigy from Eastern Continent had an ancestor whose knowledge reached deep roots and could 'summon' the powerful beast.
So what if the dungeon residents would go against their fates, killed humans and then somehow got stronger to the point where the dungeon would allow them to grow on their own somewhere else from humans?
It was obvious that human's growth wouldn't stop at certain floor just because they united or agreed to not oppose each other.
"What if some race just went ham on others, killed them all and evolved from this experience? Or what if the dungeon could bring this evolution? The dungeon could bring the whole worlds into one place, then this should be even easier."