Also unforseen to the Argillacreantis was the existence of a previous life form on the planet. Indeed, they had not seen, or had disregarded the existence of humans on the planets.
The humans had not been created by the Argillacreantis, and as such possessed a potential greater than the sum of all the other tribes, as no creation can possess a greater power than their creator themselves hold.
Thus, the potential of the humans was unbound. But that potential was unrealized, and so they were amidst the weakest tribe.
The Umbradesertis and the Lunatesseris, meanwhile, held great power, nearly as powerful as the Argillacreantis themselves.