Spellcasting is a permanent addition and my skills are all forbidden spells.

Lu Cheng raised his hand to summon a three-layer barrier, while he was thinking about it.

After the star-eating bug, this was the second alien monster he encountered.

But it is different from the Star-Eating Insect King.

This giant turtle has little to do with the world's disasters. It appeared in a treasure chest in the country of Japan.

The treasure cache is located inside the Earth Fire Ruins, and there are many such giant turtles in it.

These giant turtles only appeared in that treasure place.

But now, it appears in the trial space.

The first four waves of monsters in the combat strength trial all have the prefix of the word trial, but this giant turtle is different.

"The problem is the Earth Fire Relics?"

A guess came to Lu Cheng's mind.

The God of Luck’s diary also mentioned the Earth Fire Ruins.

Is there any connection between the two?

Thinking of this, his heart moved.

In the previous life, no one had ever set foot on the Challenger sequence, and everything related to it was blank.

But judging from the fact that he can trigger a world announcement once he succeeds, this challenger sequence is probably of great significance, and its status can even be on par with world disasters.

Moreover... two of the three special effects of the Challenger Medal are related to gods.

From this point of view, there may be a lot of connection between the challenger sequence and the gods!

As his thoughts turned, the giant turtle opposite him was already within a hundred meters.

"Roar……"

The giant turtle opened its huge mouth, its mouth was dark like a tunnel, and roared.

Along with the roar, the giant turtle's back ignited with flames, making the surrounding area red.

Looking up and glancing at the giant turtle, Lu Cheng's mind turned.

The giant turtle of Kosi is known for its defense, and it would take a lot of effort for him to kill this giant turtle.

However, for him, it’s not a bad thing!

After coming out of the underwater palace, he defeated the Thorn Giants and added many layers of passives. Now, his Endless Drain proficiency has reached 8,400 points.

Maybe, with this giant turtle, we can break through 10,000 points!

With this in mind, Lu Cheng checked the job transfer panel.

[The combat power challenge is in progress, countdown: 51 minutes and 31 seconds, 51 minutes and 30 seconds...]

He looked away, feeling happy.

Thanks to the quick movements earlier, there are now more than 50 minutes left in the countdown, which is almost enough!

His defensive methods have improved a lot now, and the Kesi Giant Turtle is not much of a threat to him.

If this giant turtle can hold on, it can definitely reach the third level of endless absorption here!

Thinking of the effect of endless absorption, Lu Cheng couldn't help but look forward to it.

And on the opposite side.

"Dong, dong..."

·The dull footsteps shook the earth, and the giant turtle, with its back covered in flames, was approaching step by step.

Seeing that the giant turtle was within range, Lu Cheng waved his staff and fired a fireball first.

"Bang!"

-

102391!

A fireball fell, and Lu Cheng nodded slightly.

The giant turtle itself doesn't have much resistance, and its powerful defense comes from its shell-shrinking skill.

When its health drops to a certain level, the giant turtle will shrink into its shell, greatly improving its defenses.

At that time, it will be a good time for him to brush up on his proficiency!

With this in mind, Lu Cheng waved his staff continuously, pouring out spells crazily.

Ice arrows, shock waves, wind blades... skills were thrown down one after another, and the health of the giant turtle dropped rapidly.

"Roar!!"

After taking several spells in succession, the giant turtle was enraged and roared,

A pillar of fire burst out of his mouth!

"boom……"

-

10294, -10087, -10305…

The energy barrier withstood the pillar of fire, its durability quickly reduced, and after a moment, it shattered with a snap.

After shattering the energy barrier, the energy of the giant turtle's attack was also exhausted and extinguished in mid-air.

Raising his hand to summon a new barrier, Lu Cheng's heart moved slightly.

This giant turtle has great combat power and can be equal to the bronze BOSS of the same level.

However, it wasn't enough to threaten him.

While his thoughts were turning, his hands kept moving, and the graceful breath created streaks of silver light.

Each skill hits, and the HP of the giant turtle decreases rapidly.

The giant turtle is so huge that there is no need to aim at all. If you throw it casually, it will be difficult to miss!

"Roar……"

The giant turtle roared and fought back, but with little effect.

Even if the energy barrier is broken, there is still the dual shield of frost armor and spell protection, which cannot threaten Lu Cheng at all!

Seeing that the blood volume dropped to nearly half, the giant turtle suddenly neighed sharply.

Along with this neighing sound, the tortoise shell on its back suddenly lit up with red lines, as if forming some kind of magic circle.

"coming."

Looking at this scene, Lu Cheng's eyes lit up.

When these lines light up, it means that the giant turtle is about to shrink its shell!

Sure enough, in the next second, the giant turtle's limbs moved violently, and with a whooshing sound, its entire body retracted into the turtle's shell.

"boom……"

Without the support of its limbs, the tortoise shell hit the ground, raising a large amount of dust.

A shock wave blew away the dust, and Lu Cheng looked at the turtle shell in front of him.

At this time, above the turtle shell, reply numbers were popping up.

+3000, +3000…

In the shrinking state, the defense of the giant turtle is greatly improved, and it can continuously restore its blood volume.

The negative effect is that you cannot use attack methods.

"What a turtle!"

After taking a look, Lu Cheng was very satisfied.

The defense is high enough and it won't fight back. It's perfect to use as a target!

He waved his staff and unleashed his skills crazily.

"Bang!"

-

10243!

"Whoosh!"

-

11012…

In the shrinking state, Lu Cheng's damage was only about one-tenth of the previous one.

However, his damage is too high now.

Skills were hit one after another, but the damage was still tens of thousands, and the HP of the giant turtle was continuously reduced.

And his skill proficiency is also growing crazily!

In the blink of an eye, more than half an hour passed.

As the spells poured out crazily, system prompts sounded in Lu Cheng's ears one after another.

[Ding, your shock wave skill has been upgraded to level 2! 】

[Ding, your wind blade skill has been upgraded to level 2! 】

[Ding, your flash skill has been upgraded to level 2...]

The main skill for stacking passives is Fireball, which has a short cooldown and is fast enough to cast.

However, other skills can also come in handy during the cooldown of Fireball.

After more than half an hour, many of his small skills have been upgraded.

Correspondingly, the proficiency of endless extraction is also constantly increasing.

[Endless extraction: proficiency 9395/10000]

Glancing at the proficiency level, Lu Cheng was a little pleased.

The proficiency of Nax Giant Turtle is stacked, and the results are remarkable!

This giant turtle has a HP of 14 million, which is almost equivalent to a building like the sealing stone.

Moreover, there is also a high defense in the shrinking state, which is more resistant to beatings than the sealing stone.

Now, there is still 25% of the HP of the giant turtle.

The fly in the ointment is that as his passive layers increase rapidly, the damage he inflicts becomes higher and higher.

Up to now, one fireball can already deal 12,000 damage.

Whether you can upgrade to Endless Drain depends on whether the giant turtle can withstand it!

With this in mind, Lu Cheng continued to wave the staff in his hand.

As his skills poured out, his proficiency in Endless Draining continued to increase.

Nine thousand five hundred points, nine thousand six hundred points, nine thousand seven hundred points...

Finally, when the giant turtle's blood volume was less than 5%, the endless drain proficiency reached its full value.

The next moment, a system prompt rang in his ears.

[Ding, your endless talent absorption has been upgraded to level 3! 】