After taking care of the five Gold Grade Beast Tamers and their contracted beasts, Leo gained 10 silver grade beast essence orbs, 5 gold grade beast essence orbs and five gold grade tamer essence orbs.
'With the six tamer essence orbs, I can increase my tamer's rank from level 1 gold grade to level 3 without a problem.'
Since most of the beast tamers Leo killed were level 1 and 2 Gold Grade, it won't upgrade his rank by much.
Nevertheless, becoming a level 3 gold-grade beast tamer upon becoming a Gold Grade Beast Tamer was a good thing.
'However, to use them, I have to awaken a beast tamer's talent and become a Gold Grade Beast Tamer.'
According to his [Quasi Divine Knowledge], one needs to have the same grade as that of the essence orb. Whether it was a beast tamer or a beast, they need to follow the same rule.
"Dream, wake up the Thunder Brothers and let them absorb all silver-grade beast essence orbs we collected."
