Chapter 830: Resonance Spellbooks, Arms Race

"Wensen, you come over here too!"

Regarding the little fanboy peeking from the side, Xia Duo simply called him over as well; since there was already one Beilaila, he didn't mind one more.

The so-called joint operation, although referring to the joint operation between Giles Tower and Gustav Tower, was actually also a joint operation for each individual participant.

Since Wensen already had a tendency to actively draw closer, it would be too cold-hearted to refuse him directly.

By comparison, Wensen, an Intermediate Mage mixed in among three High Mages, might face higher risks.

The only concern now was whether Wensen could understand the influence of plane differences on spellcasting; it wasn't just Xia Duo who thought this, as Niya and Beilaila also cast suspicious glances at Wensen:

"Do you know what to do?"

Stared at by three High Mages, Wensen hurriedly replied: "I know! Father already taught me before I came! Really! I promise!"

"Then let's start verifying with the spells in the Spellbook! Verify as many as you can!" Xia Duo directly set the task.

The Spellbook just received from the Quartermaster was a Magic Item; although not as refined as Xia Duo's own Spellbook, it was not easily obtained by ordinary Mages.

However, considering that the participants in this mission were either Pioneers or direct members of the Seven Towers, their financial status was naturally different from ordinary Mages, so this Spellbook was actually just so-so, but—

The true purpose of this Spellbook was not merely as a semi-consumable item similar to a rechargeable Scroll, but was related to Cooperative Resonance Casting.

The moment he received the equipment and supplies, Xia Duo checked everything, especially the Spellbook, a piece of equipment that was almost unnecessary to configure.

Upon closer inspection, combined with a comparison to the one Niya received, Xia Duo had a shocking discovery—

That was, these Spellbooks might have been set with some kind of synchronization function at the time of manufacture, making them almost natural tools for Cooperative Resonance Casting.

Cooperative Resonance Casting, usually also called Synergistic Resonance Casting, was the method many mentors used to exploit the spellcasting energy of their Apprentices.

But the reason it was called Synergistic Resonance was because different Spellcasters were essentially different subjects; under normal circumstances, they could not perform Cooperative Resonance Casting at all. Only by resonating their will to the same state, or one might say frequency band, could they perform Cooperative Resonance Casting.

For Spellcasters like Elves who achieved a certain Resonance State through perceiving the Magic Net and tempering their will, Cooperative Resonance Casting was almost effortless.

But for humans, who directly forced the Magic Net, the individual characteristics in their will were extremely heavy; relatively speaking, it was quite difficult to reach a Resonance State among different Spellcasters.

But just as capitalists rack their brains to figure out ways to make money, mentors would also rack their brains to figure out ways to exploit Apprentices.

Synergistic Resonance Casting was almost the first course every Apprentice learned after choosing a mentor!

But that was in a Laboratory setting, where the mentor exploited the Apprentice's results to the limit, regardless of the Apprentice's state, and usually there were only one or two Apprentices.

In wartime, the situation was different; one had to coordinate the mental state of each person in the Resonance State. Although there were leaders and assistants among the Spellcasters, there was almost no excessive exploitation, and the number of people was larger, making the difficulty greater.

Xia Duo had never performed Cooperative Resonance Casting with others in battle; at most, he had tried it with Niya in the Laboratory to save energy, but it wasn't always perfectly tacit.

Even a husband and wife were like that, let alone in a situation with many people, and they had to fight!

Battle was not like other things; a slight mistake didn't mean some monetary loss, but one's life could be lost.

Previously, Xia Duo had been very curious about why Giles Tower gathered so many people to conduct Cooperative Resonance Casting training, wondering if the hype was greater than the reality!

Now it seemed his insight was too shallow, and he did not understand the foundation of the Seven Towers.

In addition, the spells in the Spellbook should also have been summarized through long-term practice, generally divided into four types: Protection, Spell Breaking, Movement, and Binding.

There was almost not a single offensive spell!

Perhaps this was also the reason why everyone was issued a Fireball Wand.

……

At the thought that the Spellbook might hide some technology that allowed Spellcasters to resonate efficiently, Xia Duo felt like a cat was scratching his heart; even during the process of verifying the spellcasting differences in the Green Field Plane, he was thinking about this problem.

Several times, he almost made a mistake.

It was no wonder Xia Duo was excited; Cooperative Resonance Casting truly implied the possibility of the existence of Mage Armies, as well as the possibility of the existence of War Spells.

In fact, in the Projection Plane 【Maiyelita Sukanweisa City】, Xia Duo already knew of the existence of Mage Armies.

At that time, he was incarnated as an Elf named Asuosi, and the friends of Asuosi's late parents, who were also the father of Asuosi's friend Gelada, were the Chief Officials of the Sukanweisa City Mage Corps.

But that was in the Elf Kingdom of the Projection Plane; Netheril in the Main Plane did not have similar pure Spellcaster armies.

Even the Daxia Spellbreaker Unit in Xia Duo's vision used Magic as an auxiliary, using swords to kill enemies, rather than being a pure Spellcaster unit.

Besides the fact that Spellcaster talent was precious, had a high status, and was not easily wasted, the difficulty of achieving large-scale Cooperative Resonance Casting was also an important reason.

Even among the Elven Nations of the Main Plane, Xia Duo had not heard of anyone still maintaining established Mage Armies.

Now seeing the Cooperative Resonance Casting auxiliary Spellbook brought out by Netheril, Xia Duo guessed that if this wasn't specifically used to flex muscles, then it must have already been known by the Elves.

Otherwise, building up strength in silence would clearly be more in line with Netheril's strategic expectations.

Of course, it was hard for Xia Duo to guess what those big shots above were thinking, but he knew that the Northland nations were likely about to stage an unprecedented arms race.

And what could he gain from this arms race?

For a moment, concepts like mobility, population, Spellcasters, and Unrestricted Warfare jumped into his mind one after another, churning into a mess; without realizing it, Xia Duo had stopped his verification work.

Just then, Niya quietly leaned over and asked softly: "What's wrong?"

Xia Duo glanced at Beilaila and Wensen, who were still seriously casting spells to verify the differences in spells across different planes, and shook his head slightly, "Nothing, let's continue the verification!"

The two had been together for so long, and even the most intimate relationship had occurred, so Niya understood Xia Duo quite well; knowing the occasion was wrong, she did not continue to ask.

……

Not long after, Beilaila spoke first, "I've finished the verification. Except for the slightly stronger Positive Energy, the other Element Affinities in the Green Field Plane are generally consistent with the Main Plane."

This was a typical simple conclusion in the style of an Arcanist.

Xia Duo and Niya understood as soon as they heard it; it was consistent with their verification results. Although it was only a side-channel test, it could also reflect the relatively Reality side of this plane.

It could be said that this Sub-plane, named the Green Field Plane, was even more livable than the Main Plane!