In the alchemy room below, Feige used stolen spell ink to create scrolls of the undead while listening to the occasional roar from upstairs. Zariel is truly enraged, and she is using her hard-earned strength to fight against the Adamantite Cage. She must have failed before to be trapped here, and now she's repeating it.

"Come on, the bigger the trouble, the better, and it's better to involve Bayer's energy more than anything else. Feige believes that only muddy waters can fish, and the more firmly Bayer rules outside, the less room for his own survival. Pulling Zariel into the game, especially when the Bronze Fortress is breached by the undead, will definitely have the effect of muddying the waters. If Kazmuk's side lives up to his little trust, and finally allows the Demon Light Killing Cannon to flood the bloody frontline, then after several things are stacked, the situation will develop in Feiqi's favor.

However, all of this can be achieved on the basis of being able to survive and become strong enough. Feige knew this well, so he devoted almost all of his energy to the creation of the Undead Urn spell. With invisibility from the undead, Feige was able to approach the undead more safely, and could even walk past them and enter the heart of the urn. Although this will not increase the effect of the spell, he can directly absorb the invoker converted by the undead into the urn to strengthen the evil aura. Evil Aura is Hell Favor, and Hell's Favor can achieve many effects.

For example, a Hell Contract, which uses Hell Favor to supplement mana consumption, so as to maintain the undead in the urn circle. Many high-level demons, such as the Deep Hell, can unleash fireballs to bombard enemies indefinitely. This is not because it has "infinite" mana – even a god cannot have infinite energy – but because it is constantly replenished by the goodwill of hell. Kill enemies in Hell with fireballs to gain Hell Favor and thus Mana. Add to that the fact that the Hellpurgator is proficient in fire to reduce consumption, and the Hell's Opinion Reserve, which it usually has in the Evil Aura, makes it seem like they can use spells infinitely.

Lust Demon does not have infinite spell ability, and must be upgraded to a stronger demon. However, Feiqi's powerful, dazzling evil aura was already comparable to that of high-level demons, and his demonic bloodline was far superior to the average mid-level after being enhanced by Zariel. The most important thing is actually magic, and his spells are completely understood by himself, and this complete mastery allows him to make changes according to his heart. The soul changes the world, and magic is the tool and product of this process. Fei Qi sorted out the relationship between the transformation of evil aura into mana, and then used spells to achieve it.

"The Fork Demon gave me the body of a contract demon, and it would never have imagined that I would be able to play with this kind of flower......" Feiqi can use Hell Favor to grab items from the ashes, and in the same way, he can also grab elemental power. The first layer of hell is the most important thing to lack is fire, and fireballs often fall from the sky. Fireballs are rarely encountered in the Bronze Fortress, but they rely on the Hell's Favor to summon fireballs, which are then used as energy sources to convert into mana for the Undead Urn Spell......

"Using the energy generated by the superundead to continue supersuperordinating the undead? Is this a perpetual motion machine?" Feige smiled and shook his head, although he had been exposed to so much magic, some ideas were still not fully acceptable. "Exchanging Hell Favor for Fireballs and Mana should be less economical than exchanging them for Elemental Gems. On the one hand, this is the first level of Hell, where fireballs are more common than elemental gems. Change to the seventh layer of hell, with the construction and destruction theme, building materials and gems will save money compared to fireballs. On the other hand, Fireballs are only a temporary effect after all, while Elemental Gems are permanent effects and are also cheaper than permanent ones. ”

Feige pinched the time to draw the scroll, then hurried out before the Essence Gathering Devil arrived. As a result, he waited outside for a long time and didn't see the devil coming, it is estimated that the undead in the flooded area are too strong, and the ordinary devil is likely to not be able to come. There may be hope for a powerful devil like the Hellpurgatory, but Bayer is unlikely to hand over something related to Zariel to a Hellpurgator - where does the true trust between the devils come from?

Fege smells that the undead flood is coming to an end, because Bayer can't keep Zariel out of control for long. "It's pretty much it", he hid in the Bronze Fortress, it's been three weeks of tossing, it's time to end.

The "quasi-perpetual motion version of the undead into the urn" in his hand will be Feiqi's last chance to earn. He pondered for a moment, and the commercial district seemed to be the best place to use the spell. So he set off as soon as he had completed all the preparation of the spell scrolls, trying to avoid the undead along the way, and even used his mana to cast two undead urns before he had a chance to reach the business district.

Shadow monsters have replaced ghosts as the main force of air patrols, flying like black silk, silent and shapeless, making them very difficult to dodge and must be careful at all times. There were very few zombies and skeletons on the ground, and some large ghouls and Poda corpses were the main patrol force, and these guys were able to shoot blight saliva or death stare at places they thought were suspicious, and they grazed Feige's side several times, literally scaring people half to death.

The core of the undead infestation is where the Cursed Bone Gate is located, where the Banshee of Death has appeared. One terrible death howl after another kept coming out, even if he was invisible to the undead, what could he do, wouldn't he be yelled to death by the banshee? Just listening to the aftermath of the banshee's howl from afar, Feige's spine trembled. As a result, he changed his mind and placed the Perpetual Undead Urn near the commercial district, closer to the Cursed Bone Gate. In this way, it can not only attract the undead of the commercial area into the urn, but also distance them from Feige when they are attracted to it.

After all, Feige went to the business district to take the sheep by the hand.

A silvery-white pillar of light rose up in the bronze fortress, instantly attracting the attention of the undead. With the roar of the mountain and the tsunami, the undead began to charge towards the pillar of light. When they hit the pillar of light, Feiqi's mana plummeted, and then a conjurifier rushed into the pillar of light, absorbed by Feiqi's evil aura.

"Come on, the critical moment has come. "Fei Qi is in the center of the circle, using the power of the contract demon to use the goodwill of hell, praying to the sky to land fireballs. He clearly felt that the favor of Hell had diminished a little, and it was simply undetectable compared to the benefits of the conjugators. A fireball fell from the sky and rushed down the pillar of light towards the core of the circle.

Converting energy into mana to power spells, a technique used in the Devil's Cannon, now works on the Undead Urn spell as well. Feige didn't meddle in the process, but watched cautiously. He let out a long sigh of relief when he saw that the fireball's energy had been fully absorbed before it could reach the circle on the ground. "At least the circle won't wear itself out of advance because of the fireball, so the cycle can be set up. ”

Feige has been in the circle for a long time, constantly absorbing the invokers, strengthening the evil aura, and releasing some evil aura, in exchange for fireballs to maintain the circle. He had been paying attention to the situation outside, on the one hand, to see if the undead in the business area had been reduced to a safe level to sneak, and on the other hand, to see if the powerful undead in the core area had come. As long as one of the two met the standard, Feige would pay enough evil aura at once, and then immediately leave the circle to maintain itself.

Feige ushered in the Banshee first, and he had already moved away from it, staying in the farthest position where he could control and maintain the spell. The banshee was very cunning, flying around the pillar of light three times, constantly letting out a death howl, while Feige responded with the Seraphim form, the most powerful of the bloodline. He felt like he was going to pass out several times, but he barely managed to hold on. The banshee finally decided that there was no one on the perimeter of the pillar of light, so she flew to the pillar of light, ready to inspect the inside. Then, she was overtaken in a continuous roar.

The undead into the urn spell swayed, and the huge consumption in an instant brought it to the brink of collapse. Just as the banshee's threat was lifted, Feige flew back as fast as he could, taking full control and finally stabilizing the spell.

The Prayer Joiner created after the Banshee's transcendence suddenly increased the intensity of Feiqi's evil aura, and the evil aura began to spread not only on the wings, but also on the body, and the aura of hell spread like a spider's web on the white skin. Fei Qi sensed a crisis, this phenomenon had never appeared in a high-level devil, so it must be his evil aura that exceeded the limit of bearing. What should I do at this time? The good feelings of hell can only be "spent" after they are absorbed, and he can only try his best to delay the absorption, but he certainly can't stop this phenomenon.

"Wouldn't it be useful to improve your own bloodline?" Anyway, he still had Zariel's purification essence in his hand, and this time the amount was ten times that of the last time, almost a full bottle, which should be of some use. Even if the bloodline ascension is useless, the pure essence of goodness inside should be able to stop the erosion of hell.

Filling the entire bottle, Feige used up all that was left of the essence of pure goodness. If the undead flood is really coming to an end, it's better to dispose of the things you have at hand as soon as possible. A new round of enhancement rituals has begun, and since it is the same reference substance, it can be regarded as continuing to strengthen. Feiqi used the Pit Divine Sword to bring divine thunder, and in the transcendent holy light, while being baptized by the fireballs of hell, he used the blood of the Zarel Devil to enhance his own Blazing Heavenly Divine Servant bloodline.

"How do you feel that this combination is a bit perverted?" Feige didn't have time to think about it, and the enhancement ritual took over, and the process was already irreversible. As the bloodline gradually became stronger, Feiqi's evil aura's ability to contain it also increased rapidly, and the infernal erosion stopped, and it was quickly eliminated by the pure essence of good. After that, his skin was still pure and white, and the dark infernal aura was only concentrated between his wings, and the terrifying black-purple rays formed a halo of light that enveloped Feiqi's back.

The bloodline has become stronger, but there is no special effect, after all, Feige will definitely not risk his life to go to the banshee to test the range of the undead invisibility spell. However, the evil aura has become stronger and has some immediate effect, Feige summons Hell to shoot fireballs, and now he only needs to use his thoughts, and he does not need to use the special means of contract demons.

"In other words, I have officially entered the high-level devil in terms of evil aura?"

After the Desire Demon reached the upper limit, and then was raised by Zariel's bloodline, the new upper limit must have surpassed the Desire Demon, which also exceeded the intermediate level and entered the high level. It's just that Feige hasn't really risen to the next level, so Hell hasn't given him knowledge about high-level devils, and he's still not completely sure.

"As long as you can continue to absorb the goodwill of hell, that's the biggest benefit. Seeing that the circle had stabilized, Feiqi returned to the business district and began to loot the items here. He wasn't greedy either, targeting books on spells, alchemy, and the making of spell items. These things aren't worth too much by hell's standards, and their loss won't cause much of a problem, at least not worth the huge cost of the shopkeepers to track down and then fight with Feige.

There may be only a handful of these "technical books" that can be applied directly, but Feige can learn the spells they contain by cracking them, and thus inspire his own spells.

In this way, he went back and forth between the commercial area and the undead urn spells, often taking a moment to crack the store's protective spells, and then hurried back to maintain the lower circle and absorb the lower invokers. The evil aura was still growing, but fortunately, the black-purple halo continued to grow, and there was no longer an erosion of hellish power. Feige realized that he had underestimated the ability of the high-level devils to carry evil aura, so in order to be able to more safely complete his plan to obtain the high-level devil form, he reduced the loot and increased the time it took for the undead to enter the urn.

When a banshee turns around as she flies towards the Undead Urn and returns to the direction of the Cursed Bone Gate, Feige knows that the undead flood is coming to an end. Without hesitation, he terminated the spell that had been running for two days, absorbing all the invokers as fast as he could, and then escaping as fast as the undead surrounded him. As he ran, he summoned fireballs and burned all the scrolls of the Undead Urn Spell, bombarding the streets of the commercial district by the way. As a result, spell protection in many shops was triggered, and all sorts of spell effects were thrown into chaos.

As Feige and Zariel had predicted, Bayer chose to take a detour from the Grey Ruin Plane and go straight to the core of the Necromancer Orb and Staff to resolve the matter in the safest, safest, and least sacrificial way. When the Cursed Bone Gate is closed, the number of undead cannot grow. Although Bayer found himself unable to control the Orb of the Dead and the Staff, after using a spell to isolate them directly from space, the Undead lost all their power.

The disintegration began, the banshees let out their final howls, then turned into ghostly and even harmless ghostfire in puffs of rising puffs of smoke. The Devils went on the offensive and regained the area with little effort. According to statistics, only thirty-two mercenaries survived in the end, and they did not gain much except for the ability to hide. This sacrifice ratio is very staggering, and there are at least thirty or forty thousand hired adventurers who came in at the beginning.

Bayer will definitely reward them heavily, anyway, the 30,000 or 40,000 lost things, as long as they take out one-tenth of it, and reward one person with the property of 100 people, it is definitely a heavy reward, right? All this, of course, must be seen by everyone in the Bronze Fortress, Bayer has always been very generous to soldiers, generals and mercenaries, and it is also very "fair".

Feige, as the only devil to enter the undead flooded area due to military orders, appeared at this award ceremony. He had been hiding in the maggot's den, and did not appear immediately, nor did he respond to the call to return to the mortal world. He also has a military order contract on him, and he can only get rid of it after handing over the mission, otherwise even responding to the call and leaving is considered a violation of the military order.

At this time, his military medals are shining, dazzling, and dazzling. Bayer jumped up from his seat and greeted Feige with open arms with a look of surprise.