The many forces in the Wizard Plane mostly have their own planes, and the trade with the orcs takes place in these subplanes, not in the Wizard Plane itself.

Duke did not expect the Black Sail's slave business to start so quickly, and it's said that the price of green-skinned orcs is not cheap.

He estimates that quite a few wizard organizations will buy a small batch and cultivate them themselves.

Anyway, green-skinned orcs reproduce quickly; they can grow new orcs with just spores.

For wizards, this is incredibly easy, much like cultivating mushrooms, allowing them to mass-produce a large number of green-skinned orcs.

After chatting with Vivian for a while, Duke began to consider the matter of advancing to an Official Wizard.

First of all, the Water of Asu is essential, and it is best to prepare two to three vials of it.

With only one vial of Water of Asu, the advancement process may stop halfway. Having reserved Water of Asu is crucial to ensure the advancement process continues.

Three vials of Water of Asu cost fifteen thousand magic stones, which is quite a sum for most wizard apprentices.

Many first-class wizard apprentices find themselves almost out of magic stones after advancing to official wizards.

The high price of the Water of Asu consumes too many magic stones, and quite a few wizard apprentices end up in debt.

Many wizard apprentices even voluntarily become playthings for some official wizards to obtain the resources for advancement.

Such occurrences are very common, and Duke has heard of them frequently.

He, however, does not need to worry about the Water of Asu, as he can exchange three hundred contribution points for three vials of it.

This is all earned from his recent war on the planes, mostly through refining magic potions, creating demonized items, and completing some tasks.

Just over thirteen hundred contribution points are not a lot, but they are enough to exchange for the resources Duke needs to advance to an Official Wizard.

In addition, some Spiritual Power Stabilizing Potions, as well as Tihorn Potions, Gaia Potions, and other auxiliary potions are needed.

The Tihorn Potion is used to maintain bodily vitality, protecting the body from excessive harm during the advancement process and ensuring the stable operation of various organs.

As for the Gaia Potion, it is intended to prevent physical mutations during advancement, in case the transformations result in peculiar changes.

For example, some wizards may grow an extra eye on their face or an arm on their back after advancing.

Usually, these don't have a significant impact and can be removed through later processing.

However, some mutations can cause irreversible effects, leading to the development of the Gaia Potion to prevent such occurrences.

These potions also cost quite a few magic stones, but Duke can exchange contribution points for them and save many magic stones.

Besides these preparations, the most important thing is the choice of Level 1 Magic.

To advance to an Official Wizard, one must choose a Level 1 Magic and construct its magic model during the advancement process, solidifying it as one's Talent Magic, allowing its use without consuming magic power thereafter.

Most wizards choose defensive type magic since survival is most critical, and offensive means can be supplemented later.

Duke is also pondering which magic to choose, finally deciding to create a Level 1 Magic himself.

He is not just thinking casually; he has his ideas.

When Duke originally created the spell Gravity Yellow Sand, he already had some thoughts.

He gained more specific ideas after browsing the Black Sail Treasure Vault with his Black Sail Badge, seeing research outcomes left by senior wizards.

Duke purchased the documentation titled "Automatic Defense and Counterattack Mechanism of Magic" at the cost of five hundred contribution points.

This material comes from a wizard named Ed Mason.

Duke does not know this wizard and has never heard of him in the Black Sail. None of the top ten legion commanders of Black Sail bears this name.

He only knows the tenth legion commander, Adric, comes from the Mason Clan.

The Mason Clan is an ancient wizard clan in the Wizard Plane, and Adric is just a relatively young descendant of this clan, now a demigod level powerhouse.

Duke confirmed this Ed is from the Mason Clan because the documentation carries a staff symbol of the Mason Clan.

Any knowledge stored in the Black Sail Treasure Vault must have been vetted by the Black Sail review, with ordinary documents not eligible for storage here.

The price of five hundred contribution points also attests to the material's significance.

Duke did not purchase the document immediately; he also consulted Lady Hela, who informed him Ed Mason was a great wizard, albeit not part of Black Sail.

Ed is Adric's grandfather, and the document was stored in the Black Sail Treasure Vault only after gaining permission from the grandfather.

Duke then had no more hesitations and exchanged for the material.

His ideas demand the knowledge within, with many crucial aspects unclear on how to proceed alone.

After completing the purchase on the Black Sail Badge, Duke needed to travel to a nearby island to acquire the actual materials.

There is no Black Sail Treasure Vault on Academy Island, so he took a boat rowed by a Dark Demon to reach a small island.

The island appeared small but very clean and tidy, with several Dark Demons patrolling and guarding it.

With the Black Sail Badge, Duke entered a structure resembling a palace and arrived in a narrow room.

Upon arrival, he was received by a wizard who seemed very old.

The material "Automatic Defense and Counterattack Mechanism of Magic" was neither in a book nor on parchment; it was in a memory crystal.

Duke was aware of the existence of memory crystals before; they are carriers capable of storing spiritual power, holding vast amounts of information.

After obtaining the memory crystal, Duke touched it with his spiritual power, and a flood of information surged into his mind.

The information was all about building an automatic defense and counterattack system for magic, involving numerous concepts and knowledge systems.

Duke found that most of this content was directly understandable without needing to ponder or realize it himself.

This is because Ed, the recorder of the memory crystal, started from the most basic theories, ensuring even wizard apprentices could comprehend the entire theory from the beginning.

After absorbing this knowledge, Duke's mind further developed the spell's prototype, and he understood how to solve the most critical parts.

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