The reason the Blood God could establish a foothold on the chaotic continent of ancient monstrous beasts, ranking at the top of Dragon State Demon Kings, was credited to his divine power - the Blood Divine Son.
This innate ability allowed him to turn his own essence blood into Blood Slaves. Once formed, each Blood Slave could sustain itself by devouring the essence blood of beasts. Since they were transformed from the Demon King's essence blood, the core of each Blood Slave was incredibly stable, making them difficult to kill. As long as their essence blood wasn't extinguished, the Blood Slaves could reincarnate indefinitely.
This divine power initially wasn't so remarkable, considering even the most powerful monster's essence blood was finite. Transforming essence blood into Blood Slaves would unavoidably deplete the essence blood of the user, causing weakness.