The insides of Paul's body were slowly charging. Ilumar had done what he could, slowly infusing Paul with the power of a Dragonkin during the evolution. The evolution was one of the rare instances where a person would go back to 0.
Their body would start going through a complete change, completely getting destroyed and then reformed. Ilumar used that to their advantage, he slowly started pouring some of his own essence that was left in the dagger in order to change Paul's bloodline. Even though it would be incredibly difficult for Paul to truly become a Dragonkin, he would still gain benefits.
Humans were some of the most balanced races in the universe, having no advantages over others, but no disadvantages either. They were amongst those that could very easily adapt their bloodline and had an easier time changing their race, either by being blessed by a much more powerful being or by doing what Ilumar was doing to Paul.