That mountain of beast cores within the City of Gold didn't have a single water-attribute core.
Because the contract their ancestor signed with the Beast King did not include any spawned beasts with water affinity.
Water attributed spawned beasts and ground ones were a bit different.
In simpler terms, those two types of spawned beasts had different kings.
Therefore, the spawned beasts with water affinity would not listen to the commands of the gnomes.
And this was the reason why the mountain of beast cores didn't have any water attributed cores.
But, within Eden, there's a place that will definitely have spawned beasts with water affinity. And those spawned beasts will definitely have water-attribute beast cores. The reason is that the water-spawned beast was a peak above diamond-rank beasts, and it was the absolute overlord within a 100,000-kilometre radius.
It was only a bit away from rising to a below platinum rank spawned beast.
