The Runic Heartprint loomed between Merlin's brows, and then out flew several mysterious runes, quickly forming a complex Runic Magic Circle which pressed down on the Runic Magic Circles in a distance.

"Crack".

With the help of the Runic Heartprint, the complicated Runic Magic Circles were broken in an instant, revealing a deep valley.

There was a cavernous hole inside the deep valley. Based on Merlin's observation, he discovered that the hole seemed to have been excavated in a deliberate manner. It must have been accidentally discovered by the Mill clan.

The hole must contain certain secrets. Otherwise, the Mill clan would not hide it warily with the Runic Magic Circles.

"Swish".

Merlin did not hesitate and stepped inside.

The passage was very dark, and a little damp, so Merlin extended a finger. A small, pale-white flame flickered to life at the tip of his finger, lighting up the entire passageway.

The further Merlin walked inside the hole, the stronger the vibration of the two volumes of the Neverending Book in his hands. There was no doubt that the third volume of the Neverending Book laid in the depths of this passage.

Therefore, Merlin was even more cautious than before. If the Neverending Book was inside the passage, then why did the Mill clan not take it?

If it truly was the third volume of the Neverending Book, it would contain vast amounts of Pandora Demon Abilities, so how come the three Seventh-level Spell Casters from the Mill clan earlier did not cultivate any Pandora Demon Ability?

Everything seemed to be shrouded in mystery.

As Merlin ventured deeper inside, a glimmer of light finally appeared at the end. It was the kind of glow from candlelight, and Merlin wondered if there was a member of the Mill clan waiting inside?

Merlin's Mind Power kept a close look out on his surroundings. At the end of the passage, he came to an underground chamber. On its walls, lit candles illuminated the entire room but there was not a single Spell Caster in sight.

The chamber also contained traces of activities of Spell Casters. It appeared that the Mill clan often sent their Wizards to check on this place. So, what was the secret that warranted so much effort from the Mill clan?

There was only one entrance to the chamber which was a gigantic stone door. The opening mechanism was simple as it was situated right next to the door itself. When Merlin opened the stone door, he saw an amazing sight.

A chilling wave of destructive aura filled the room in an instant. Even Merlin felt suffocated at this moment and dared not take another step forward.

In front of him was a huge Runic Magic Circle like a clear glass crystal. There was a power that was as thick as a pillar inside, at the same time, exuding an overwhelmingly vicious aura.

"Maxim! It's the terrifying Thunder Maxim!"

Merlin was undoubtedly familiar with this Maxim. This familiar aura was the Maxim he had been dreaming of, the treasure that he had been searching for in Sky-Piercing Peak. Furthermore, judging from the fluctuation of its aura, it was obvious that it was a Thunder Maxim.

Up till now, Merlin already possessed the Flame Maxim and the Ice Maxim. Whereas Sky-Piercing Peak was hiding the Thunder Maxim. Due to the destructive nature of the Thunder Maxim, it would be difficult for an average Spell Caster to approach the Maxim, not to mention obtain it.

Moreover, the Runic Magic Circle which was encasing the Thunder Maxim was incomparably complicated and contained a fearsome power. Once the Runic Magic Circle was touched even slightly, it would unleash a destructive attack.

At this moment, Merlin finally understood why the Mill clan spent so much effort protecting Sky-Piercing Peak and why they would send people to check on the chamber.

They had already found the hidden Maxim in Sky-Piercing Peak!

This Thunder Maxim was probably the Maxim left behind by the mysterious owner of the Neverending Book. The third volume of the Neverending Book was just lying next to the Thunder Maxim. It was not that the Mill clan did not want the third volume of the Neverending Book but they were simply unable to obtain it.

Not only were they unable to get close to the Thunder Maxim but they also feared the attack from the Runic Magic Circle. Thus, they deliberately built such a chamber to guard this Thunder Maxim while they figured out a way to get close to the Thunder Maxim or the third volume of the Neverending Book.

Unfortunately, a Maxim left behind by a Great Legend coupled with a personally-arranged Runic Magic Circle was certainly no easy feat that could be cracked by those three weakest-tier Seventh-level Spell Casters from the Mill clan. Even a spell casters' organization with Ninth-level Spell Casters might not be able to crack open this Runic Magic Circle.

For one, this Runic Magic Circle was not ordinary. It was not a mere defensive Runic Magic Circle but a defensive plus attacking Runic Magic Circle. Once it was triggered, the person would immediately be attacked by the Runic Magic Circle at full force.

Considering that it was a Runic Magic Circle that had been personally arranged by a Legendary Wizard, if it attacked at full force, who on earth would be able to withstand the attack?

Therefore, the Mill clan had discovered the Thunder Maxim and the third volume of the Neverending Book for naught because they were helpless against it. They could only see it in front of their eyes but were unable to obtain it.

This was the regret of a weak Spell Caster! They found a treasure chest but could not open it.

"Hum".

Merlin took a deep breath and activated the Runic Heartprint. The glowing Runic Heartprint clearly displayed before Merlin, every structure of the Runic Magic Circle that had been personally arranged by the Legendary Wizard.

However, after carefully studying the structure of the Runic Magic Circle, it was Merlin's turn to sigh deeply. This Runic Magic Circle was indeed too complicated to solve.

It was the most complicated Runic Magic Circle that Merlin had ever seen, excluding the combination of the Runic Magic Circles that covered the entire Dark Magic Region. Back in the day, the Runic Magic Circles in the Dark Magic Region had been put together by the Great Wizard Fidel with great effort.

The Great Wizard Fidel's understanding of runology was almost at its peak or else he would not be able to conceive such an astonishing and priceless Runic Heartprint.

With the help of the Runic Heartprint, Merlin was able to progress from being illiterate in runology to being able to set-up and tear down some complicated Runic Magic Circles. These accomplishments were made possible with the power of the Runic Heartprint.

The same was true for this Runic Magic Circle before him. It was extremely complicated but it was not entirely impossible to crack. It would only take a very long time.

With the Runic Heartprint, Merlin did not believe that there was any Runic Magic Circle that could not be cracked. Nevertheless, Merlin also had another worry. If he somehow managed to break through the Runic Magic Circle and the Thunder Maxim came bursting out, how would he be able to withstand such terrifying power?

The last time, Merlin was only able to suppress the Ice Maxim by relying on spell derivation by the Matrix. He used the Matrix to rapidly consume the Ice Maxim, and with the help of the Flame Maxim, eventually managed to suppress it.

Right now, on the other hand, Merlin needed the power of the Maxim to suppress Darkness Eye. Since keeping Darkness Eye constantly suppressed required the powers of the Maxims, Merlin needed a large number of Maxims.

The Thunder Maxim was very large, so Merlin did not want to simply exhaust it. Otherwise, he would no longer be able to suppress the fourth form of the Darkness Eye.

"Swoosh".

Merlin took out the first and second volume of the Neverending Book. At this moment, the two volumes were changing rapidly and seemed eager to fly out from Merlin's hand.

Merlin considered for a moment and decided to allow nature to take its course. He wanted to see what would happen when the three volumes were combined.

"Whoosh whoosh."

Merlin did not suppress the two volumes of the Neverending Book any longer and allowed them to fly out.

In a flash, the two volumes of the Neverending Book flew toward the Runic Magic Circle but hovered outside like they were being obstructed by the Runic Magic Circle. At the same time, inside the Runic Magic Circle, the third volume of the Neverending Book which was lying next to the Thunder Maxim also appeared to have sensed the presence of the other two volumes. It began to glow brightly and flew toward the two volumes of the Neverending Book.

The third volume of the Neverending Book was vastly different from the first two volumes. It exuded a mysterious and powerful aura, just like a powerful Spell Caster.

Surprisingly, the Runic Magic Circle did not block the third volume of the Neverending Book from passing through, so it penetrated the barrier of the Runic Magic Circle and rapidly intertwined with the other two volumes.

There was dazzling light mid-air in the chamber. The three volumes of the Neverending Book were slowly combining. As mentioned in the Neverending Book, only the combination of all three volumes would reveal the Maxim.

Therefore, once these three volumes were combined, there should be a close linkage to the Thunder Maxim. Merlin was slightly excited to see what happened next.

Seconds turned minutes, and time continued to pass. After more than an hour, the dazzling light on the three volumes of the Neverending Book had finally subsided. In the air, a new Neverending Book had appeared.

However, this new Neverending Book had completely changed form. For starters, there was only one volume left, and it glowed radiantly with a golden shimmer. Mysterious runes loomed faintly on top of it.

"Hum hum hum".

The runes on the Neverending Book and the extremely complicated Runic Magic Circle intertwined with one another, and thereafter, the complicated Runic Magic Circle unexpectedly began to gradually disappear.

This caught Merlin by surprise. Apparently once the three volumes of the Neverending Book were combined, it served such purpose. It seemed that he would not need to activate the Runic Heartprint and painstakingly dismantle this complicated Runic Magic Circle after all.

Following the collapse of the Runic Magic Circle, the terrifying aura of the Thunder Maxim started to ricochet uncontrollably around the chamber. Even Merlin felt like he was caught in a tidal wave, seemingly small and helpless.

Merlin tried his best to hold on, and with through strong gritted teeth, he caught the Neverending Book in mid-air. The moment the Neverending Book came into contact with his hand, Merlin felt the terrifying aura of the Thunder Maxim being absorbed by the Neverending Book. Suddenly, Merlin was completely unaffected by the surge of the Maxim.

Moreover, the Neverending Book faintly emitted a strange power that seemed to be linked with the Thunder Maxim, allowing him to get closer to the Thunder Maxim with ease.

"Holding the three volumes of the Neverending Book allows you to absorb the Thunder Maxim!"

On the cover of the Neverending Book, small golden letters began to flash into view. They were all written in the ancient Molta language so it was probably left behind by the mysterious Legendary Wizard.

"The Neverending Book! I see, in order to absorb the Maxim, I've to rely on the Neverending Book!"

Merlin's eyes shined brightly. Now he knew the true importance of these three volumes of the Neverending Book. Otherwise, even if he had found the Thunder Maxim by himself, he would be in the same quandary as the Mill clan, completely helpless against the Thunder Maxim and the Runic Magic Circle.

This Thunder Maxim was different than the Ice Maxim where it was meant to be passed down and absorbed by another Wizard. As long as the Wizard held the three volumes of the Neverending Book, the Thunder Maxim could be easily absorbed.

Merlin took a deep breath and reined in his excitable emotions. His held the golden Neverending Book tightly in his grip and began to edge closer to the Thunder Maxim with the destructive aura.