My Weekly Refreshing Mentor Spirit

"Susu, unfold Margaret’s Pure Land."

"Alright, the 911th experiment begins!" Susu immediately opened the Pure Land, her entire being once again transforming into a vessel for Margaret, commencing the opening of that Pure Land used to confine demons, akin to the Netherworld.

At this moment, the Witch Demon King had completely lost the ability to struggle and awareness. After hundreds of tortures and experiments, this Witch Demon King, stitched together from the Shabu Insect Race and the youngest son of the Old Demon Emperor, Carl, had already lost consciousness and sound after over 200 instances.

The Witch Demon King ceased thinking.

Yet Xue Dili never thought to stop experimenting. Through nearly a thousand experiments, he gradually discovered the Witch Demon King’s traits and extracted its true core.

It was a technique that resided in the Soul Fire of the Witch Demon King, which Xue Dili named "Eternal Slavery."

After so many experiments in Susu’s Pure Land, Xue Dili and Susu both understood the characteristics of this Eternal Slavery.

There is no such thing as absolute immortality in the world, nor absolute invincibility; any formidable power requires a corresponding price.

Just like how Senior Abdullah Hassan became the strongest just below the Mimic Venerable King, the price was being completely permeated by the Void. Now, he has lost all senses, emotions, and memories, only a last sliver of obsession remains in the Masked Ball.

Can the Witch Demon King resurrect infinitely? Then what is the cost?

The cost is actually borne by others for him, precisely this technique named "Eternal Slavery" by Xue Dili.

It is an extremely domineering technique, Xue Dili even sensed the power of authority within it, named "Immortality."

This is the authority of the Eighth Apostle!

Just as Xue Dili’s authority as a Self-Destructor stems from the cost of abusing Cursed Blood, the Eighth Apostle, Undying King, possesses this authority embodying the concept of "Immortality," making any unit carrying this authority never die.

And the price is the Eighth Apostle himself!

He needs to integrate a portion of his soul into this authority, thus creating an immortal, indestructible Witch Demon King.

Thus, the essence of the Witch Demon King is merely a doppelgänger of the Eighth Apostle, fused with local corpses, not causing alarm to World Consciousness!

This power allowed the Eighth Apostle’s undead scourge to sweep across the Cosmos, becoming a cosmic disaster on par with the Heart Stealer, the Insect Swarm, and the Divine Tree.

However, the cost left his soul in a somewhat segmented state, yet the Eighth Apostle likely found a way to avoid this side effect, akin to partially becoming the divided "Eternal Slavery."

This is the authority of immortality; at the most critical moment in a few hundred years, he can retract all Eternal Slavery, instantly restoring to peak condition, possibly even surpassing the strength of the foremost apostles!

He even attempted to treat the side effects of his authority as positive effects for usage.

After thoroughly testing the essence of this Eternal Slavery technique, Xue Dili fell silent.

As an apostle who entered the Mist Council around the same time, the formidable power and authority of the Eighth Apostle, Undying King, significantly surpassed that of the incomprehensible Ninth Apostle.

Moreover, the power of this authority is not limited to that. Any unit of the "Eternal Slavery" would be completely controlled by him, with complete enslavement from body and mind to soul.

The power of this authority, even if an apostle accidentally got caught, could potentially be controlled by the Eighth Apostle through Eternal Slavery.

Of course, this is in an ideal scenario, as apostles are hard to be affected by the undead scourge to become undead, and this curse might be dispelled by various means just as it takes hold.

Therefore, theoretically, this Eternal Slavery technique even has a way to completely control an apostle.

So, when actively transforming an apostle into an undead, could the Eighth Apostle control himself not to manipulate this apostle?

Eternal Slavery is established based on the authority of "Immortality," so even the Eighth Apostle himself can only use the power of this authority, not completely control it.

Just like how Xue Dili can utilize the power of the Void but cannot control the Void from affecting him.

Hence, Xue Dili had an idea!

Apostles might have the potential of being eternally enslaved, but undead transformation of apostles is unlikely. However, if a being originally undead ascended to become an apostle, who could resist the temptation of completely enslaving another apostle?

"The 911th experiment, in the Pure Land, completely devour the ’Eternal Slavery’ using the power of the Void, to determine whether it can harm its source, the Eighth Apostle!" Xue Dili’s voice resounded.

In the Pure Land, it is actually Margaret’s primary subspace, specifically used to devour and contain the authority of another world.

However, it has now become the experimental site for Xue Dili and Susu, even if there were issues here, at most Susu’s status would be lowered, with no impact on other areas.

And using the Void here to devour the soul fragment of the Eighth Apostle from the Eternal Slavery would not allow the Eighth Apostle’s true body to trace back here.

Soon, Xue Dili no longer suppressed the power of the Void, now he could directly devour any unit in contact with his soul.

Actually, it is about throwing the item directly connected to his soul into the Great Void within, so the void monster inside him could grow again.

"Ah, ah!!" A wailing cry echoed from the Eternal Slavery technique, little knowing that the twisted monster from the Void seemed to sense new energy, wrapping around and instantly refining the soul fragment of the Eternal Slavery.