If it allowed an ordinary human to succeed in his research, wouldn't the endless years of life in the catacombs be spent on dogs?

It should be known that most of the creatures in the catacombs world had an unlimited lifespan.

With an unlimited lifespan, why did most of them only have a few magic spells with them?

Of course it was difficult!

Moreover, the more powerful a spell was, the more time it would take to study it, and the more difficult it would be to produce results.

And the human in front of him clearly did not understand this common sense!

The Rogue Archer could not help but shake his head, his face revealing some disdain.

But very quickly, his face stiffened.

That was not right.

Studying magic was indeed correct, but the environment was not right.

Now they were facing an enemy.

There was still a powerful enemy in the cave that he hadn't dealt with yet.

'Could it be that he isn't afraid that I will shoot an arrow at him at a critical moment?'

Thinking of this, the Rogue Archer couldn't help but reveal a look of anticipation.

Then, he picked up his bow and prepared to shoot at Klein.

He knew that Klein was already trapped. As long as he suddenly attacked, although he wouldn't be able to kill him, he would definitely be injured. If he was lucky, he might be severely injured. When that time came, would he still need to be so passive?

The Rogue Archer gulped and clenched the bow in his hand, preparing to attack.

But just as he was about to attack, he suddenly realized that this might be the other party's trick to lure him into attacking?

If the other party had found it, they would have attacked long ago. How could they have waited until now?

It wasn't his match at all, and there was no relationship between the two parties.

When he shot the arrow, he had already confirmed that there was no room for negotiation between the two of them.

Moreover, he was a human, and he was a crypt creature. They were natural enemies, natural enemies. Therefore, the other party had no reason to let him go.

Thinking of this, the Roger Archer could not help but swallow his saliva.

The more he thought about it, the more he felt that his guess was correct.

The other party must not have been able to find his position, so they would have used a strategy. Otherwise, they would have already made a move, and would have waited until now?

However, if he wanted to find him, he would not be able to do so with the strength that he had displayed.

And if he did not defeat him, not only would he not be able to take the treasure chest and obtain the items dropped by the two demonic beasts, he would not be able to walk out of the catacomb.

Therefore, this was a war of time. Moreover, because of his unique talent, he had taken the initiative in this war.

If he was the enemy and wanted to kill him, he would have to lure him into action. Then, he would have to determine the location and kill him!

Thinking of Klein's terrifying knife, the Rogue Archer's heart slowed down.

If not for the platinum treasure chest's uniqueness, he would have been killed long ago.

If the other party found another opportunity, wouldn't he be doomed?

Thinking of this, the Rogue Archer gently put down the bow.

He was extremely certain.

The other party was definitely fishing. Once he took the bait, the other party would definitely seize the opportunity. At that time, he would definitely die.

He did not doubt the other party's strength.

The powerful Armored Scorpion and the speedy Harpy had proved this point!

With this in mind, he slowly moved his feet and quietly ran back.

He was already very certain that as long as he didn't make a move, the other party would definitely not be able to find him. The best way now was to drag it out and see who could endure it!

...

Klein, who was immersed in his research on magic, didn't know that he had been on the brink of danger at least three times.

In the end, the Rogue Archer relied on his powerful imagination to give Klein more time to research.

And at that moment, after Klein obtained that bit of inspiration, he finally found his way forward.

At that moment, with a thought, a tornado appeared in his hand again.

The only difference was that the color of the tornado wasn't right.

It was green before, and its color was very faint, as though it would dissipate at any moment.

But now, it had turned black.

That's right, the tornado had turned black, but it wasn't pure. It was a mixture of gray and black.

But even with the change in color, its power was at least five times stronger than before.

Klein threw the tornado in his hand out.

The tornado that was thrown out was like a wild horse that had lost its rein. It instantly crashed to the ground and absorbed the energy of the surrounding elements. It spun faster and larger.

In a short moment, it had reached the level of a level 10.

Furthermore, this wind was different from ordinary winds.

Klein had also infused a small amount of metal elements into it.

If one looked carefully, they would definitely see traces of golden patterns on the edges of the black tornado.

This was the result of Klein's research.

This was because compared to the wind, the metal elements were more condensed and sharper.

With the speed of the wind element, the destructive power of the metal element could be maximized!

Looking at the destructive power of the tornado that was fused with the metal element, which was even more terrifying than before, Klein couldn't help but shake his head. Fusing it was too difficult!

He had only fused a tiny bit of it into the tornado, but it had already made it so powerful. If he added more, the power of the wind element would probably increase by at least ten times!

At that time, even if he didn't use the Endless Sword, he would be able to instantly destroy the Stone of Destruction. Even if the other party was standing on the ground, the tornado that Klein had fused with would be able to ignore the rules of the Stone of Destruction's rebirth and instantly kill it!

...

At this moment, the Rogue Archer looked at the black tornado that Klein had thrown out and couldn't help but reveal a serious expression.

The tornado in front of him wasn't right.

That's right, he had been staring at Klein from afar.

The tornado from before was green in color and didn't have much power. It was even easily restricted by the environment.

But the tornado now wasn't right. Not right, very wrong!

The color wasn't right. The tornado that was spinning crazily actually made it feel a terrifying pressure.

But that was impossible.

How could a tornado evolve so quickly?

Could it be that the person in front of him was hiding his strength?

It was very possible.

But it didn't seem like it. If that was the case, why did he only use it now?

And with so many experiments, unless the person in front of him was crazy...

But it was clearly not.

It should be the result of the other party.

Could it be that the other party was really researching it?

Thinking of this, the Roger Archer's heart turned cold.

As Klein used an even more powerful tornado, the Roger Archer knew that he had been deceived!

The person in front of him was not fishing. He was basically researching magic to find a way to break his invisibility!

"Damn humans, they're too cunning."

The Roger Archer panicked.

He was truly panicking. Previously, his confidence was built on the fact that the other party could not find him. Now, it was obvious that the other party had the ability to do so.

If he allowed the other party to succeed, wouldn't he die?