Lu Yan had been in possession of the Soul Banner for some time now. Based on its performance, it could indeed be considered decent among low-grade magical artifacts, but it was far from reaching the level of the legendary number one magical artifact of the Demonic Path.
If the Soul Banner could only control Vengeful Souls, even if it gathered tens of thousands of them, they would be easily extinguished by powerful Golden Core and Nascent Soul cultivators.
Lu Yan knew that the most important reason for this was the absence of a Main Soul within the Soul Banner.
A Main Soul could only be refined from the soul of a powerful cultivator. The Qi Refining Stage 1 workers cultivated in the Spirit Talisman Shop, for instance, had soul strengths only slightly stronger than ordinary people, which was far from sufficient to refine a Main Soul.
If the Vengeful Souls in the Soul Banner were considered soldiers, then the Main Soul was the general commanding these soldiers. The strength of a Soul Banner largely depended on its Main Soul.
The Main Soul could enhance the realm of the Vengeful Souls. If the Main Soul mastered Ghost Path Spells, it could also cast them using the Vengeful Souls' ghostly energy.
Only when the Main Soul was strong enough could it better command the Vengeful Souls.
When the Main Soul reached a certain level, it could even evolve a Ghost Domain. When the Soul Banner was activated, it would be the descent of the Specter Ghost Domain. This was the true power of a Demonic Soul Banner.
However, to reach that level, it would require at least a Thousand Soul Banner comparable to a magic treasure. The low-grade magical artifact Soul Banner in Lu Yan's hand was still a hundred and eight thousand miles away from that.
A soul comparable to Mid-Stage Qi Refinement was enough for Lu Yan at this stage to refine a Main Soul.
Looking at the Wandering Souls and the souls of the Giant Zombies scattered across the ground, Lu Yan ordered the five Vengeful Souls:
"Go and guard the main entrance to prevent zombies from breaking in and interfering."
Upon hearing this, the five Vengeful Souls guarded the entrance of the apartment building, while Lu Yan began preparing to refine the Main Soul.
He first took out the Demonic Path Magical Artifact Secret Records, turned to the page on the Soul Sacrifice Array for refining the Main Soul, then took out a Spirit Stone, crushed it, and began drawing the array with the Spirit Stone powder.
In fact, the best material for the Soul Sacrifice Array for refining the Main Soul was the fresh blood of the Main Soul's body. However, after the Giant Zombie's soul left its body, it turned into white bones with no fresh blood. Lu Yan could only use Spirit Stone powder as a substitute.
The Soul Sacrifice Array for refining the Main Soul was not complicated. After all, it was just an auxiliary array for refining the Soul Banner, and it couldn't even be considered a first-order array.
If it were a first-order array, Lu Yan's knowledge and the materials he had would not be enough to construct it.
After completing the array drawing, Lu Yan placed the Giant Zombie's soul in the center of the array, and then placed dozens of ordinary zombie Wandering Souls on the other array nodes.
The Giant Zombie's soul was missing the Heaven and Earth souls, and its soul power was greatly damaged after being attacked by the five Vengeful Souls. Lu Yan used ordinary zombie Wandering Souls as material to supplement its missing soul power.
After setting up the array, Lu Yan used the Soul Banner to activate the array.
The next moment, a dazzling spiritual light rose from the Spirit Stone powder, and numerous ordinary zombie Wandering Souls turned into a ball of soul fire, rapidly converging towards the center of the array.
The originally muddled Giant Zombie's soul suddenly awakened after receiving the soul power supplement, letting out a roar that pierced the soul.
The Giant Zombie's soul attempted to break out of the array, but under the restriction of the array's spiritual light, the Giant Zombie, which only had its soul body left, could not shake the array at all and could only let the array's spiritual light cover it.
The ghostly mist on the Soul Banner spread again, engulfing the entire Soul Sacrifice Array. On the banner face of the Soul Banner, a few simple lines outlined a massive, ferocious evil spirit.
The array light dissipated, and the Main Soul refinement was completely finished.
After doing all this, Lu Yan waved the Soul Banner in his hand, and a huge ghostly creature, three meters tall, appeared before him.
This giant ghostly creature had a green face and fangs, and its body was as sturdy as a guardian deity in a temple, presenting a completely different style from the Vengeful Souls.
The ghostly creature looked down at Lu Yan with a condescending gaze, its eyes flashing with fierce light, and extended its right hand towards Lu Yan.
Lu Yan's expression was calm, and he made no movement. The Soul Banner in his hand suddenly moved without wind, and a large area of ghostly mist turned into a dark flame that spread to the ghostly creature's soul body.
The ghostly creature's arm was instantly engulfed by the dark flame, and a painful wail came from the mouth of this giant ghostly creature.
"Aow!!!"
However, the dark flame did not stop at this moment but continued to spread towards the ghostly creature's soul body. Its body and legs were quickly swallowed.
As most of its soul body was burned by the dark flame, the intense pain brought by the soul burning made the ghostly creature unable to hold on any longer.
It struggled to lie on the ground with its incomplete body, its only intact head desperately kowtowing towards Lu Yan, begging for Lu Yan's forgiveness.
When the flame completely swallowed its body, leaving only a ferocious head, the dark flame finally extinguished.
Lu Yan held the Soul Banner and stood before the ghostly creature, which was left with only a head. A humble smile immediately appeared on the ghostly creature's ferocious and ugly face, and it voluntarily released the defense of its soul body to Lu Yan.
Lu Yan lightly raised his right hand, and a flame formed by a bit of ghostly mist was imprinted on the ghostly creature's head, like a flame mark.
"You won't have a next chance."
Lu Yan's tone was indifferent as he delivered the final judgment.
Then, the ghostly mist gathered below the ghostly creature's head, condensing its body.
However, compared to when it had just finished refining, the ghostly creature's soul body was now significantly shorter, barely exceeding two meters. Even its solidified soul body was much more ethereal, and the aura around it was no longer stable.
Clearly, the ghostly creature, having lost most of its soul body, had suffered a severe injury.
The ghostly creature showed no dissatisfaction with this result. Instead, it followed behind Lu Yan with a fawning expression, looking like a lackey.
Glancing at the ghostly creature's sturdy appearance, Lu Yan said coldly:
"From today onwards, you shall be called Warrior!"
With the bestowal of the name, it also meant that Lu Yan had successfully tamed this Mid-Stage Qi Refinement Main Soul.
Normally, the Soul Banner had a very high degree of control over the ghostly creatures it refined, but refining a Main Soul was an exception.
All Soul Banner Main Souls were refined from the souls of powerful cultivators. To allow for the Main Soul's growth potential, the Soul Banner master would retain a bit of the Main Soul's intelligence during the refinement.
This led to the possibility that if the Main Soul was too powerful, it could very likely counter-control the Soul Banner master.
In history, it was not uncommon for Demonic Path Cultivators to be killed by their Soul Banner's Main Soul and then refined into a Main Soul themselves.
Lu Yan was only at Qi Refining Stage 1, and there was a certain risk in refining the soul of a Mid-Stage Qi Refinement Giant Zombie. He could only rely on the Soul Banner to suppress it.
For this reason, Lu Yan did not hesitate to let the ghostly mist devour the Warrior's soul body, making it completely fearful before subduing it.
After this lesson, the Warrior's soul body was damaged and would inevitably decline, dropping from roughly Qi Refining Stage 5 to barely reaching the level of Qi Refining Stage 4.
But Lu Yan did not regret it. Compared to a powerful unstable factor, a slightly weaker but completely controllable Main Soul was clearly more valuable.
And during the process of taming the Warrior, Lu Yan also discovered a very interesting point.
That was, although Transcendent Zombies had powerful souls, their intelligence was significantly lower than that of human cultivators.
If a human cultivator were refined into a Main Soul, the other party would most likely pretend to be submissive and only launch a counterattack when the time was ripe, especially Demonic Path Cultivators.
Although Transcendent Zombies appeared unruly, their hostility and respect were both displayed on the surface, so there was no need to worry about being stabbed in the back.
Moreover, Transcendent Zombies had not seen the world and did not know anything about cultivators. Simply using the Soul Banner to devour their soul body was enough to deter them, and completely subduing them was not difficult.
This brainless characteristic was actually suitable for refining into a Soul Banner Main Soul.
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