Duke didn't expect the news to arrive so quickly. According to the rules of Black Sail, after a promotion, you are indeed required to register and report it.

But generally, it's done voluntarily. If you don't go, usually no one will come looking for you.

After all, there are so many Wizard Apprentices on Academy Island. Asking each one would be too time-consuming and labor-intensive.

From the time of the message in the Black Sail Badge, it seems it was sent almost on the same day I was promoted, probably when I was sleeping.

He thought for a moment and sent a message to Simon, inquiring and informing him of his promotion to First-Class Wizard Apprentice.

Simon quickly replied: "I'm not too sure about the specifics. I just heard there will be some big movements soon. The information is very confidential, and I can't find out much. I was about to tell you."

After talking with Simon, Duke learned that Black Sail indeed has some big actions recently, even involving them, the Wizard Apprentices.

They don't know the exact details, only that they need to quickly enhance their strength, to always be ready for whatever happens next.

...

Duke arrived at the job hall on Academy Island, found the corresponding counter, and began to register.

He received a parchment requiring him to fill in which magic spells he is proficient in, and his skill level in magic potions, alchemy, and other related skills.

If he knows magic potion, he must specify which magic potions he can refine, all needing to be written clearly.

Duke frowned, thinking that there were no such requirements before. He wondered what Black Sail was planning.

He then started filling it out according to the content on the parchment, but he didn't complete all the information, merely filling out part of it.

To no one does he want to reveal all his cards completely.

After Duke finished filling out the parchment, there was nothing else to do, and no further inquiries.

He noticed quite a few First-Class Wizard Apprentices coming here, like himself, holding the same parchment and filling in information.

Unlike Duke, who just got promoted, these individuals had clearly been First-Class Wizard Apprentices for some time.

Pondering over this matter, Duke left the job hall and turned to the magic store in the town.

The magic store predominantly sells various magic-related materials, like books on magic models and such.

The books there are all new and extremely expensive.

Duke had visited the vendor stalls many times before, failing to find the magic spell he wanted.

After obtaining a Yellow Sand Crystal, he had new ideas, so he came to the magic store to see if he could find a suitable spell.

Since the store is located on Academy Island, most of the spells are sub-elemental spells, with only a few Level 1 spells.

As for higher-level ones, they're not available here. The clientele is mainly Wizard Apprentices.

After strolling inside for a while, Duke indeed found something, discovering a spell suitable for him.

It was an earth magic spell named Rock Wall.

Rock Wall is quite a strong defensive spell within earth sub-elemental magic, able to summon a wide and solid wall from the ground, infused with magic power.

Duke roughly calculated that if he currently casts Rock Wall, the defense strength should reach 21 degrees.

Though the defense strength of Rock Wall is high, its drawback is evident: the spell is somewhat cumbersome and lacks flexibility.

After all, it's merely a wall rising from the ground. If the enemy attacks from a different direction, it's still vulnerable, primarily serving for emergency defense.

Moreover, for Wizard Apprentices, casting this spell consumes quite a lot of magic power, making it somewhat impractical.

However, the situation was a bit different for Duke.

With the Yellow Sand Crystal in his possession, he could use the sand within to perform these spells, not consuming much magic power.

Duke then inquired about the book's price, which was two hundred and twenty magic stones.

Now he had only slightly more than three hundred magic stones on him, making the purchase quite a significant investment.

Fortunately, there were still many Magic Potion Materials in his Space Ring; otherwise, he wouldn't even have magic stones for refining magic potions later on.

After acquiring the book, Duke returned to his dormitory to study and learn.

The complexity of the Rock Wall spell was N7, the most challenging spell he had encountered so far.

But for Duke now, the structure of the Rock Wall magic model was not overly complex.

While grinding the levels of four earth magic spells to max, a wealth of related knowledge surged into his mind.

This knowledge became his accumulation, laying a solid foundation for him.

Now, with his background in earth magic spells, Duke found it easy to understand and master.

He constructed the Rock Wall magic model successfully in no time.

Afterward, Duke returned to the familiar grove.

He first followed the regular casting method of Rock Wall, communicating with the earth element in the ground, summoning a rock wall at a designated spot.

Even for Duke, completing this process wasn't easy. After consuming considerable magic power, a rock wall rose before him.

The rock wall was approximately five meters high, three meters wide, and nearly half a meter thick.

This wasn't an ordinary earth wall; it was imbued with the magic power Duke had just input.

Generally, such a strong rock wall would be difficult for a regular Wizard Apprentice to break through.

The Magma Bomb in Duke's hand couldn't penetrate this rock wall, at most leaving small pits on it.

He then, based on his understanding, summoned a lot of sand from the Yellow Sand Crystal, manipulating it according to the Rock Wall magic model.

Soon, a sand-constructed rock wall materialized in front of him.

Gazing at this sand wall, Duke suddenly had a flash of inspiration: "Why must it be in the shape of a wall?"

With a thought, the sand wall before him instantly disintegrated into countless grains of sand, wrapping around Duke entirely, forming a sand sphere.

Since sand is looser than earth rocks and clumps, its form can be more freely controlled.

Duke could completely transform it into any shape he wanted, customizing and altering it according to his needs.

In battle, he could envelop himself in sand, ready to solidify into a rock wall for defense at any moment.

Duke experimented for a long time, finding the effects quite satisfactory.

[Rock Wall: LV1 (15/100)]

On the Skill Tree, a branch corresponding to Rock Wall appeared, sprouting a green bud.

Duke also discovered that because he didn't need to form a complete wall, each magic power expense was minimal.

Simply condensing it to shield size would increase the proficiency of the Rock Wall, consuming far less magic power than a full rock wall.

This equated to accelerating the increase in Rock Wall's proficiency indirectly.

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