In the air, the Black-White Great Wizard's face was slightly gloomy. Although he had heard of Holy Fort Guardian Spirit of Blacksand Fort, he had never seen it with his very eyes. Now that he saw the Holy Fort Guardian Spirit, he could feel an enormous threat.

"Black-White Great Wizard, your Ozmu plotted to weaken the strength of our southern Spell Caster world? Haha, today, I'll make sure that none of you gets to go back alive. Go, Holy Fort Guardian Spirit, kill!"

Wizard Utto of Blacksand Fort sneered. Then, he whispered to the Holy Fort Guardian Spirit. The humongous Holy Fort Guardian Spirit seemed to be able to understand Utto's words as its giant body started moving.

"Swoosh."

The Holy Fort Guardian Spirit extended a leg and directly kicked it toward the Black-White Great Wizard in mid-air forcefully. The leg was the size of a huge pillar. The whistling sound of the leg rushing through the air alone was scary enough that even the Black-White Great Wizard was also stunned.

"Boom!"

The Holy Fort Guardian Spirit's attack landed directly on the Defensive spells set up by the Black-White Great Wizard. This Defensive spell was also quite resilient, and it was released by the Black-White Great Wizard. However, in face of the Holy Fort Guardian Spirit's attack, it only withstood briefly before it completely burst open.

The Black-White Great Wizard was shocked and hurriedly summoned the black-robed Great Wizard to him. The black-robed Great Wizard was his alchemy clone, and it was very powerful. Every time he was in danger, the Black-White Great Wizard would make his alchemy clone block in front of him.

"Chi."

Dense spikes appeared on the Holy Fort Guardian Spirit's thick legs. It pierced the body of the black-robed alchemy clone easily. In the past, the alchemy clone was able to withstand any force, but now, it seemed so fragile.

The Black-White Great Wizard was astonished. Even Ozmu and he himself had far underestimated the power of Blacksand Fort. Nobody expected the Holy Fort Guardian Spirit to be so terrifying. Besides, Ozmu had only sent only one Great Wizard to Blacksand Fort. Even if Ozmu sent two Great Wizards, it would still not guarantee that they could inflict any damage on Blacksand Fort.

Every large spell casters' organization had its own trump card, which was a heritage that was inherited for millenniums, far from what ordinary forces could match.

The Holy Fort Guardian Spirit was the trump card of Blacksand Fort. As long as the Holy Fort Guardian Spirit existed, Blacksand Fort was safe!

"Zi Zi Zi."

At the same time, the two sharp horns on the Holy Fort Guardian Spirit's head actually began buzzing with electric flashes. The silky electric lights contained terrorizing power, and even the sky had turned dark all of a sudden.

"Go, we can't stay here anymore. All Ozmu Spell Casters, retreat!"

The Black-White Great Wizard yelled. Thereafter, he grabbed the heavily damaged black-robed alchemy clone with one hand, and quickly retreated out of Blacksand Fort.

The black-robed alchemy clone sustained heavy damage, and it had lost its fighting power. Nevertheless, it was only an alchemy clone after all. Therefore, as long as it was carefully repaired upon returning to Ozmu, there was a possibility for it to recover. The Black-White Great Wizard would naturally not give up an alchemy clone that could rival a Great Wizard.

At the same time, the Black-White Great Wizard's voice spread throughout the entire Blacksand Fort. For a time, many unfamiliar Spell Casters flew out from all over the place, all of whom were Spell Casters of Ozmu.

Some of them were Spell Casters of the Fourth-, Fifth-, and Sixth-level. Of course, some were even scarier as they were the Seventh-level and above. Each of their attacks carried dreadful power. Ozmu had raided Blacksand Fort for so long, and so far, there were some injuries on their side, but not more than three of them had died.

With such amazing strength, it was not surprising that Ozmu could go against almost all spell casters' organizations. They were never in a disadvantageous position either. The reason was that their nest was extremely difficult to find or in other words, could not be located at all. Hence, no one was able to launch a devastating assault on them.

Another reason was that Ozmu's strength was way too strong. Each of their members was a genius, almost invincible even on the same level. They were even capable of cross-level challenges.

When such a group of geniuses gathered in Ozmu, every dispatch of a part of their Spell Caster base could almost subvert a powerful spell casters' organization.

Yet, they picked the wrong target this time. The Holy Fort Guardian Spirit was far too strong. Even the Black-White Great Wizard's alchemy clone was hit hard and fled in helter-skelter, not to mention the other Spell Casters of Ozmu.

"Swooz swooz swooz."

Finally, the two sharp horns on the Holy Fort Guardian Spirit's head had accumulated enough electric power. Thus, with a strange growl from the Holy Fort Guardian Spirit, bolts of thunder descended from the sky and locked target on every Spell Caster of Ozmu.

"Pom pom pom."

It was almost impossible for Spell Casters of Ozmu under the Seventh-level to resist the strike. It would be very difficult to escape the Holy Fort Guardian Spirit once they were targeted. Therefore, the Spell Casters of Ozmu started screaming one by one. They were dead before they could escape from Blacksand Fort.

"Haha, great, just great! Ozmu, since you guys have dropped by, leave us something to remember you then!"

Wizard Utto laughed aloud because this time, Ozmu launched a surprise attack where Blacksand Fort was completely unprepared. It could be considered a heavy loss on their side. If they had only sustained losses, it would be nothing really. Yet this time, Ozmu entered their place like there was no one guarding, and rushed into Blacksand Fort effortlessly without any resistance. This had greatly tarnished the honor of Blacksand Fort.

After all, Blacksand Fort was a large spell casters' organization, and it was they who proposed to deal with Ozmu. Yet now, Blacksand Fort themselves had been ambushed by Spell Casters of Ozmu, so it was a huge slap on their reputation. For this matter, Blacksand Fort would be ridiculed by other large spell casters' organizations for a long time.

Thinking of this, the Great Wizards Utto and Tumen were rather infuriated. Hence, even if they had to pay a big price in summoning the Holy Fort Guardian Spirit, they must still make Ozmu pay an equally heavy price this time.

Merlin was awe-struck as he looked at the Holy Fort Guardian Spirit's "slaughter". It was indeed a massacre. Under the Holy Fort Guardian Spirit's lightning strike, there was simply no power that could defend against it.

These geniuses of Ozmu originally had the opportunity to promote to the Seventh-, Eight-, or Ninth-level, and even had the chance to become Great Wizards. These Wizards, each of whom was a true genius, was God's favored child in the groups which they previously stayed in. They carried the hopes of their respective spell casters' organizations.

Nonetheless, under the Holy Fort Guardian Spirit's "slaughter" now, one by one, they were bombarded to death by the lightning.

The immense power of the Holy Fort Guardian Spirit was undoubtedly revealed to the fullest. This was the trump card of Blacksand Fort. Merlin suddenly thought of the Dark Magic Region. The Dark Magic Region was once a powerful organization that can rival large spell casters' organizations. He wondered if there was a powerful trump card in the Dark Magic Region?

Maybe there was, maybe there was not. Such a card must be in the hands of the very core of the Dark Magic Region – the only one Ninth-level Wizard. It must be something that even Wizard Leo was not aware of.

Merlin scanned around. There was still a majority Spell Casters of Ozmu who had fled successfully. However, most of them were Seventh-level Spell Casters or above. As for the Spell Casters below the Seventh-level and those who did not have time to retreat, they were directly killed by the Holy Fort Guardian Spirit.

However, among these Wizards, Merlin did not see Kleis' figure. Clearly, Kleis had already retreated from Blacksand Fort from the very beginning and had dodged the attack. Facing the Holy Fort Guardian Spirit, not to mention the third form of Spatial Blade, even if it was cultivated to the fourth form or even the fifth form, he would still never match the Holy Fort Guardian Spirit.

Pandemonium reigned in the entire Blacksand Fort. There were some Ninth-level Spell Casters of Blacksand Fort who came out to restore order, but after Ozmu wreaked such havoc, it was only futile. In addition, the Wizards in so many spell casters' organizations had been killed, so no matter how the Spell Casters of Blacksand Fort assured them, it would still not rid those Wizards of their worries.

"Wizard Leo, what do we do now? Continue to stay in Blacksand Fort or return to the Dark Magic Region?"

Merlin hesitated for a moment but he still asked softly.

Wizard Leo started pondering. After a moment, he spoke, "We'll leave Blacksand Fort first. The mayhem here will probably last for a while. Ozmu's sudden attack had also been planned for a long time. This time, even Blacksand Fort themselves are in a huge mess. The entire southern Spell Caster world will continue to be chaotic for some time. If the situation isn't controlled, I'm afraid that Ozmu's plan will succeed. There's no way that the southern Spell Caster could be united to deal with Ozmu now, but these were rather unrelated to us. If the three major large-scale spell casters' organizations can unite and take control of the situation, then they'll naturally inform us about it. If they can't control the situation, it'll suffice for us to return to the Dark Magic Region and not participate in any of it!"

Wizard Leo's action was very appropriate. At present, it was necessary for them to rush back to the Dark Magic Region. After all, the Dark Magic Region had lost three Seventh-level Wizards, which could be deemed as a heavy loss. They could no longer continue taking part in this matter.

"Alright, since you're leaving, then we Blacksand Fort will not stop you. Open the Runic Magic Circle entirely!"

Finally, the Spell Casters of Blacksand Fort decided to completely open the Runic Magic Circle. There must be many among them who had similar thoughts as Wizard Leo. All of them wanted to leave Blacksand Fort as soon as possible and did not wish to remain here to participate in this matter.

Ozmu had left, and the loopholes in the Runic Magic Circle of Blacksand Fort had also been fixed. In order to leave, the Runic Magic Circle must be opened. There were so many Spell Casters asking to leave, so Blacksand Fort naturally could not force them to stay. Hence, they could only open the Runic Magic Circle.

However, after this disaster, the prestige of Blacksand Fort would plummet to the lowest. There was no guarantee of safety even inside Blacksand Fort itself, so who would dare to go to Blacksand Fort in the future?

As a large spell casters' organization, the intangible damage to reputation was more substantial a loss than the deaths of Spell Casters in Blacksand Fort.

Great Wizard Utto and Great Wizard Tumen also looked cold-eyed at the Spell Casters leaving Blacksand Fort. On the contrary, Wizard Utto was interested to continue pursuing Ozmu. However, there was not much power left of the Holy Fort Guardian Spirit currently, so it needed to continue its slumber.

Besides, did Ozmu only send these people? Blacksand Fort was not really clear. If there were still Spell Casters of Ozmu inside Blacksand Fort, they might still be in danger. Hence, Wizard Utto and Wizard Tumen decided to stand guard in Blacksand Fort just in case.

Seeing that many Spell Casters had left, Wizard Leo also sighed. "Okay, let's go!"

Thus, Wizard Leo led the way and left Blacksand Fort with Merlin and whoever was left of the Dark Magic Region.