The black giant wolf is the guardian spirit of the fourth-layer rune tower, which is comparable to the fourth-level spellcaster, and the three spellcasters just now, although they can defeat the black giant wolf alone, it is also a little difficult, and it took a long time to defeat it.

Merlin was also watching from the side for a while just now, and he understood the characteristics of the black giant wolf, which is fast and has strong defense, even if it is attacked by a fourth-level spell, it can withstand it, which is quite difficult for ordinary third-level or even fourth-level spellcasters.

"Fast, strong defense?"

A smile appeared between the corners of Merlin's mouth, these characteristics of the black giant wolf were almost restrained by him, in terms of speed, Merlin has an instantaneous wind, extremely fast. In terms of defense, Merlin even has the ability to melt the earth with spells, which can resist the attacks of sixth-level spells.

"Whoosh".

The black giant wolf directly turned into a black light and rushed towards Merlin, Merlin gently stretched out his fingers, and in his white fingers, a trace of white fire appeared.

"Snort".

Merlin flicked his fingers, and a white flame flew out of the arcane, and quickly spread, turning into a fist-sized fireball.

"Bang".

The fireball smashed the black giant wolf's body, and the black giant wolf didn't even react, it was directly wrapped in flames, and in the scorching heat, it collapsed in an instant.

"Too weak!"

Merlin shook his head slightly, perhaps for ordinary spellcasters, the fourth layer of the Rune Tower is the real test, because only at the fourth layer, the guardian spirit can be comparable to the fourth-level caster, and can enter the Rune Tower. The strongest can only be a level 3 caster.

Start with the fourth floor. Basically, it's up to the caster to skip the challenge. That's why it's called the real test!

However, Merlin is not an ordinary spellcaster, and the fourth layer is not a test for him at all.

"Next, it's time for the fifth layer!"

Merlin was shrouded in white light and disappeared in an instant.

In the fifth layer, Master Sarah, Master Enwia, and Master Ilman. The three casters were staring at the stone pillars in front of them with solemn expressions.

Master Enwia also glanced back at Lu Xia, and said in a deep voice: "We have to hurry up, I didn't expect Merlin's speed to be so fast, he is about to catch up with us, we must defeat the guardian spirit of the fifth layer as quickly as possible, and break through the fifth layer!"

The fifth layer of the Rune Tower, which none of the three of them could break through, even if they joined together, they felt very tricky.

The only hope. It was the Mage of Envia who spent a great deal of money to obtain the Koleman Rune Disk. The three of them are all in the Dark Spirit Realm, and they have studied runes more profoundly, and they can be regarded as very talented spellcasters with rune talents.

It is precisely because of this that such a complex magic circle as the Koleman Rune Circle can be activated by these three people, this is their only hope, and it is also the reason why they have come to break into the Rune Tower this time.

In the most glorious era of spellcasters, the rune circle was not weaker than Pandora's magic energy, but because it took too much energy and too long to study rune literature, many spellcasters simply chose to cultivate Pandora's magic energy rather than study rune literature.

And now, in the era of the complete decline of spellcasters, runes are even more completely declining, and there are even fewer casters who can be proficient in runes, that is, the Dark Spirit Domain is good at runes, so there can be some casters who are outstanding in runes.

These three people are undoubtedly in the Dark Spirit Realm, and they have excellent talents in runes, otherwise, if they change to others, even if they get the Koleman Rune Disk, they will not be able to urge it.

Seeing the somewhat nervous look of Master Envia, Master Ilman seemed very calm and said easily: "Master Envia, don't worry, the black giant wolf in the fourth layer is not so easy to deal with, even if this Merlin is really a genius like Claes, it will take a little effort to deal with the black giant wolf, and we have plenty of time to break through the fifth layer!"

Master Enwia also nodded slightly, he also knew that the black giant wolf on the fourth layer was not so easy to deal with, and it took a long time for the three of them to pass.

However, he still said cautiously: "We still have to hurry up, we can't take it lightly!Let's start, let's first integrate our spiritual power into the Koleman Rune Array, make all preparations, and wait until the guardian spirit of the fifth layer appears, we will urge the magic disk, combine the strength of the three of us, urge the Koleman Rune Array, and bombard the guardian spirit of the fifth layer in one fell swoop!"

As the words fell, a disc emitting white light appeared in the hand of Master Envia, and on the disk, dense mysterious runes were engraved.

This is the Koleman Rune Disk, which is very precious, and it was obtained by Master Enwia at a great cost, and it also requires at least three spellcasters who are proficient in runes to successfully urge it.

However, once the magic plate is activated, it can trigger the Koleman rune circle that has already been arranged in the magic disk, and it will burst out with unparalleled power.

Seeing the Koleman rune disk, the eyes of Master Sarah and Master Yilman both showed a hint of envy, such a rune disk is very precious, the Dark Spirit Domain is a spellcaster organization that is good at runes, and there are naturally such rune disks in the Tower of Vientiane, and even rune disks that are stronger than Koleman.

However, the price of those rune spell disks is unimaginably expensive, and any rune spell disk can easily require thousands of contribution points, even for those spellcasters above level four, it is too expensive.

Even the Koleman Rune Disc obtained by Master Enwia was not exchanged from the Tower of Vientiane, but from the outside, through some special methods.

That is, Master Envia, who was born in a powerful spell caster family, can have such a huge wealth to buy a rune magic disk, and as for Sarah and Mage Ilman, they can only be secretly envious.

"Hurry up and put the spiritual power into the rune magic plate......"

Master Enwia said in a deep voice.

Mage Salad and Mage Ilman were also a little impatient, although they had simulated it before, but simulation is simulation, such a precious rune magic disk, Master Enwia would not take it out casually for them to try, only when it was time to really use it, they were allowed to engrave their spiritual power into the rune magic disk.

"Whoosh".

Suddenly, a white light flashed in the fifth layer, and Master Enwia and the others immediately noticed the change, staring at this sudden white light.

Soon, a black-robed figure gradually walked out of the white light.

Seeing this figure, Master Enwia and the others changed their faces instantly.

"How could it be so fast? How could the fourth-layer guardian spirit be defeated so quickly?"

"I actually broke into the fifth layer, I originally thought that Merlin would delay a little time on the fourth layer, but I didn't expect that in the blink of an eye, Merlin reached the fifth layer, it seems that the black giant wolf on the fourth layer did not cause any trouble to Merlin at all. ”

Mage Ilman, who had just sworn that Merlin would spend some time on the fourth layer, had an extremely embarrassed expression, but at this time, no one was paying attention to him, and Master Enwia only had a strong sense of urgency in his heart.

"Quick, engrave the spiritual power into the rune spell plate, Merlin is more powerful than we imagined, we must not let him break into the sixth layer first!"

Master Enwia immediately urged, and as a result, Master Sarah and Master Ilman also came back to their senses, and immediately mobilized their spiritual power and carved a trace of spiritual power into the rune magic plate.

"Buzz".

Suddenly, the rune magic disk in Master Envia's hand immediately burst out with a burst of dazzling light, and mysterious runes appeared in mid-air, and then flew to the surface of the three people's bodies, like a layer of armor, protecting the three of them in the mysterious runes.

After doing all this, Master Enwia and the other three did not delay, and directly stepped into the middle of several vermilion stone pillars and began to face the guardian spirit of the fifth layer.

Merlin, who had just come to the fifth layer, frowned slightly, feeling a little inexplicable, he felt a faint hostility in the eyes of Master Enwia and the other three.

Merlin remembered very well that he didn't know these three people at all, so how could anyone be hostile to him?

However, when he saw Master Enwia and the others rushing into the vermilion stone pillar and starting to challenge the guardian spirit of the fifth layer, Merlin had a glimmer of realization in his heart.

It turned out that these three people were afraid that he would be the first to break through the fifth layer, or even the first to break through the sixth layer, after all, in the thousand-year-old inheritance of the Dark Spirit Domain, no one had been able to break through the sixth layer, so there were still treasures left by the great Archmage Fidel himself in the sixth layer.

Thinking of this, Merlin also shook his head a little helplessly, this kind of "hostility" is really a little inexplicable, in his opinion, the strength of the three of Master Enwia and the other three is not strong, the fifth layer is already their limit, it is very difficult to break through the fifth layer, let alone the sixth layer.

Therefore, Merlin was not in a hurry, but squinted his eyes slightly, stood aside, and carefully watched the battle between the three of them and the fifth layer of guardian spirits.

Although Merlin's strength is very strong, after reaching the fifth layer of the Rune Tower, he also has to be cautious, the guardian spirit arranged by Archmage Fidel is stronger than the other, and there can be no contempt.

"Wow!"

Just like the sound of the water, when Master Enwia and the other three stood in the middle of the vermilion stone pillars, all the stone pillars emitted a rich white light, and these white lights converged together, like small streams, and finally converged into a vast ocean!

In the rich white light, there was a faint "fierce" aura, which had never appeared on the first to fourth floors of the Rune Tower.

"Roar ......".

Suddenly, in the dazzling white light, accompanied by a dense rune array, a shocking roar resounded in the fifth-layer rune tower. (To be continued......)