Those who mastered the Death Rule could create Evil Spirits. Hades, as the former King of the Underworld, had also created Evil Spirits.
In fact, Hades had created not only Evil Spirits, but also Skeletons, ghosts, Zombies, and more. This was a branch of the Death Rule: Death Life.
It sounded somewhat similar to Andrew's Undying Ability, didn't it? But in truth, they were different. Death Creatures created by the Death Life Rule were irreversible.
For example, if you created a Zombie, you could not turn that Zombie back into a living being. At most, you could only let him rest in peace.
To revive a Zombie, one had to master the Life Rule and the Purification Rule. Moreover, reviving a Death Life was an extremely complicated matter that required many other preparations. Simply put, it was a major undertaking.
Andrew's Undying Ability, on the other hand, could temporarily turn people into Evil Spirits. Once the ability ended, the Evil Spirits would turn back into ordinary people. It was truly incredible, even contrary to common sense, which was why Hades was so shocked.
"My Undying Ability uses far more than just the Death Rule."
Andrew smiled and said, "Besides the Death Rule, it incorporates many other rules. Only through their Fusion can Evil Spirits like this be created.
"For example, the Hate Rule. It is the catalyst for the Undying Ability. Only under the influence of hatred can the Undying Ability advance and turn mortals into Evil Spirits."
"I see."
Hades nodded, but secretly grumbled, After talking for so long, he didn't reveal anything about the core. Of course I know there are many other rules, and I know the Hate Rule is involved. But that isn't what I want to hear. I want to hear about the Core Rule.