It was well known that if someone had comprehended a law before reaching the King realm, his foundation would evolve, making him stronger than ordinary King rank beings. There were others, more hidden benefits too.
Unfortunately, because most of them have neglected their elements for too long and because comprehending a law was too difficult to begin with, very few of them could manage to do it in the Four and Five Star realms.
Those who could do it would become the genius of their respective tribe, gain a high status, and be nurtured with the tribe's all resources.
This was also why none of the Five Star demons Max fought had comprehended a law. Only O'mara and the short demons had gained some insights, which was why they were stronger than other peak Five Star demons and were made temporary commanders.