Merlin and Kleis had never crossed paths. With regard to the Dark Magic Region, Merlin did not actually have much sense of belonging there. Hence, even if Kleis betrayed the Dark Magic Region, it did not really have any effect on Merlin.

However, it was just because of one woman – Bluebird!

Out of nowhere, Bluebird found Merlin and intended to kill Merlin. Since then, Merlin vaguely guessed that a fight between him and Kleis was unavoidable!

Later, when Merlin's identity as a Six-Elemental Spell Caster was publicized, and when his reputation grew, almost everyone was comparing him with Kleis, which had indirectly affected Merlin.

Even someone like Wizard Leo had secretly compared Merlin and Kleis. This was fate. The two of them were destined to cross paths.

Step by step, Kleis strode calmly toward Merlin. Some of the Spell Casters thew a glance at each other, then charged toward Kleis.

However, Kleis did not even lift his head. He reached out his hand and pointed at the Spell Casters. The invisible Spatial Strength quivered.

"Pom pom pom."

All the Spell Casters who neared Kleis were shattered. It was an invisible Spatial Strength which was virtually impossible to defend against. Even a typical Sixth-level Spell Caster could not resist it and would be killed by a blow!

"Slash!"

Kleis raised his hand again and slammed his palm down fiercely. Suddenly, countless blades seemed to have appeared in the hall, and soon, many Spell Casters screamed in pain.

The Defensive spells on these Spell Casters or Defensive casting tools were sliced off directly by Spatial Strength. Even the Spell Casters themselves were cut into several pieces.

After all, not everyone was a Miracle Child, and Kleis' Spatial Blade was absolutely invincible. A large number of opponents was no longer of any meaning to him because no one here could block any of his blow.

"Chi-chi-chi."

Any place where Kleis trudged past was like hell on Earth. The bodies of Spell Casters around him were all cut into several parts. Fresh blood spilled all over the place. It was an atrocious scene of brutality.

Merlin's eyes glimpsed. A huge armor had already appeared on his body. Perfect Armor had covered his body to cope with the attacks that could appear at any time. Merlin sensed a strong threat from Kleis.

"Boom!"

Suddenly, billows of green mist filled in the hall. The mist had a pungent stench, which seemed to be formed from the infinite discrete powder floating in the air.

Moreover, there was a breeze which was faintly controlling the green mist. It drifted toward Silver Sword Heulier and the skinny Spell Caster, but most of the mist drifted to Kleis.

When Silver Sword Heulier had just come into contact with the mist, the skin on his body immediately started corroding. It even brought with it traces of burning pain. It was clearly a poisonous mist.

"No way, what is this monstrosity? Stay away from me!"

Terror displayed on Silver Sword Heulier's face. It was all because of his carelessness. He normally used a sword to cast spells and was an Elemental Swordsman himself, so even in combat, he rarely cast Defensive spells.

Yet today, because of his inattention, he was shrouded by the green mist, and his arm quickly ulcerated. There was nothing he could do to stop it.

Silver Sword Heulier gritted his teeth. At this moment, no one could help him. When the toxins spread to his entire arm, he no longer hesitated. He waved his long sword and forcefully cut downward, chopping off his arm from the shoulder down.

If a Spell Caster did not have a special potion, even a Spell Caster of the Seventh-level or above could not regenerate an arm unless the person was a Great Wizard. Great Wizards had a different fundamental from the average Spell Casters where they could not even be considered "human" anymore. There was a faint sense of elementality with them.

As long as their Mind Power was not scattered and his Spell Models were stable, even if their bodies were reduced to powder, they could still be revived again. However, Spell Casters below the level of Great Wizards could not pull this off, just like in the case of Wizard Leo. When he was hunting Osseus previously, he had lost an arm and until now, the arm had not recovered yet.

Therefore, now that Silver Sword Heulier had lost an arm, he would be without the arm forever.

"Damn, who the heck is it?"

Silver Sword Heulier had lost an arm forever, so he was fuming with rage. He never thought that these Spell Casters who were feeble like lambs could actually hurt him.

Kleis' footsteps came to a pause. He recognized the green mist in front of him at first glance. This was a poisonous mist formed by the potion powder.

"Hooo..."

Kleis cast a Wind-type spell and directly blew the mist into the crowd. Some of the Spell Casters who had not cast their defense were immediately brushed by the poisonous mist. Immediately, their bodies started corroding.

"Kleis, do you still remember me?"

A man in a black robe gradually came out from the crowd. Then, he fiercely flipped over his hood and revealed an aging face. Nevertheless, his facial expression was extremely scary and menacing. His face seemed to be distorted too.

Seeing this mysterious black-robed man, a hint of surprise flashed in Merlin's eyes. This black-robed man was actually the Wizard who had vanished without a trace at the time Merlin left the Dark Magic Region back then.

Back at the time, Wizard Hall gave Merlin Mokra Potion with only one purpose, that was for Merlin to kill Kleis when he had ample strength!

Merlin also learned Wizard Hall's issue from Wizard Leo where Hall's daughter was tortured to death by Kleis. Thus, it was not surprising that Wizard Hall hated Kleis to the core. Now, with the mere strength of a First-level Spell Caster, Wizard Hall had actually used a poisonous mist made out of potion powder and even hurt Silver Sword Heulier. It seemed that he was also well prepared with a detailed plan.

"You?"

Kleis frowned slightly, then shook his head and glanced at Silver Sword Heulier behind him. His gaze suddenly turned sharp.

"No matter who you are, you've hurt Heulier. Die!"

Then, Kleis reached out his hand and grasped. Invisible Spatial Strength instantly tore Hall from all directions. With Wizard Hall's mere First-level Spell Caster strength, there was no way he was able to resist it.

"Haha, Kleis, of course you don't remember me, but you still remember Guiya, right? Haha, my poor daughter, you've used alchemy and tortured her to death. I waited for this day for far too long!"

Wizard Hall laughed, his demeanor becoming more and more frenzied.

When Kleis heard the name mentioned by Wizard Hall, his expression changed slightly. He seemed to have recalled that vengeful look from the beautiful woman who, in the Dark Magic Region, was tortured to death by him while he was studying alchemy.

"You want revenge too? Chaos!"

Kleis' expression only changed slightly, which then returned to its initial calmness. He extended the five fingers on his hand and Spatial Strength suddenly burst out.

"Boom!"

Wizard Hall's laughter came to an abrupt end as his body exploded. Blood splattered, giving off a strong bloody smell.

Merlin did not manage to act. Kleis' movement was too fast. He did not even have time to counterattack as Wizard Hall was turned into a bloody fog.

Watching Wizard Hall turn into a bloody fog and instantly perish, Merlin's heart sank.

However, soon after Wizard Hall exploded into a bloody fog, it splashed toward all directions. Even with Defensive spells, any Spell Caster who came into contact with the bloody fog was instantly corroded too and shrieked painfully.

The same was true for Kleis. The blood splashed onto his Defensive spells, and they quickly eroded too. However, his face looked dignified.

"It's actually Dark Blood Potion. This was one of the most deadly potions. It needed to use fresh blood as a base to erupt its unparalleled toxicity! Imbuing Dark Blood Potion with his own blood is an impressive trick, and a terrific idea, but it may be in vain. I happen to have a few antidotes in hand which could reverse the poison of Dark Blood Potion!"

There was a smile on Kleis' face. Thereafter, he quickly took out a few potions from his ring, raised his hand in the air and waved, sprinkling a puff of pale-yellow potion powder in the air.

The pale yellow potion powder quickly drifted toward Silver Sword Heulier and the skinny Spell Caster, which removed the Dark Blood Potion off them.

Merlin was relatively further away, so he had not been affected by the Dark Blood Potion. Still, deep down, he was very astonished. A mere First-level Spell Caster had actually dealt a little threat on a powerful Spell Caster like Kleis by using a venomous potion.

The splattering blood seemed to be totally unstoppable. Even if one had a Seventh-level Defensive spell, it could also be infiltrated. However, it was obviously too difficult to brew such a potion, and it was also necessary to use fresh blood as a base. Wizard Hall must have put in a lot of thought and effort. This time, he was prepared to embrace his demise. He voluntarily wanted to be killed by Kleis too, so he could splash the Dark Blood Potion on Kleis.

Unfortunately, Kleis was also an apothecary. Incidentally, he used to brew a potion powder which could remedy the Dark Blood Potion, so he was not harmed. The one-hit attack that Wizard Hall had carefully masterminded did not work.

Looking at the drops of blood scattered on the ground, a feeling of indescribable sadness echoed in Merlin's heart. Wizard Hall ended his life in such a tragic way. It was an act of ultimate despair, the final strike of revenge!

"Come on, Kleis!"

Merlin let out a low growl from his throat. It was impossible to escape from the hall now. Facing Kleis, he had no choice but to fight. This was an inevitable battle!

"Swoosh."

Remnants of silhouettes were shaped out of Merlin's figure. This was the quickest speed which had reached its extreme limit. Merlin had cast Flash Wind. In terms of speed, he could almost be deemed the fastest among the many Spell Casters here.

At the same time, Merlin had cast Darkness Vortex. He did not believe that Kleis' Mind Power had reached the Seventh-level. As long as it had not reached the Seventh-level, he would not be able to withstand the illusion of Darkness Vortex.

"Slash!"

Kleis slowly raised his hand as if he did not see Merlin at all, and waved unceremoniously.

"Chi."

A soft noise was heard. Before Merlin's Darkness Vortex, which worked well everywhere else, had yet to form, it was actually crushed by the invisible Spatial Strength.

Merlin was astounded. It was the first time that Darkness Vortex had been forcibly broken. In the past, those who broke his Darkness Vortex had only persisted by relying on strong Mind Power.

Only Kleis was able to directly crush Darkness Vortex!

"This is the genius of the Dark Magic Region who has been claimed to be able to match me? Too weak..."

A taunt seemed to have come from the edge of Kleis' lips. He casually raised his hand and grabbed toward Merlin's direction from the distance.