At this moment, the group of Servants had truly engaged in battle with Solomon.
While Solomon was attacking the shield-bearing Mash with what seemed like pity, the bloodied Servants who were previously thrown away came charging from all directions once again.
Karna continued to wield his divine spear, summoning flames rivaling the center of the sun to burn towards Solomon.
Rama's Immortal Blade was completely unleashed, emitting bursts of lightning as it danced back and forth, cutting towards Solomon.
Heracles completely abandoned defense, roaring loudly while wielding his axe-sword. Storms surged as he launched fierce attacks towards Solomon.
Naturally, on the Argonavis manipulated by Jason, Medea, Atalante, and Sito, among others, were also taking action.
Some provided support and enhancement to the charging Servants, while others released endless arrows, shrouding Solomon's direction.
With nearly ten charging Servants, including some top-tier ones, and the reinforcement from Rozen and Medea's enhancement, their combat strength was unimaginable, causing fear in anyone who thought about it.
However, faced with all this, Solomon only continued to raise his hands, sneering, without even moving. The magical energy on his body undulated between creating invisible impacts to throw away the Servants or causing pure and powerful magical energy to burst on each charging Servant, making it impossible for them to inflict any damage.
In this situation, Rozen was completely astonished due to Scáthach's statement.
"Summon Heroic Spirits now?"
Rozen almost doubted his ears.
However, Scáthach was not joking, of course.
"He is the world's ultimate weapon against major disasters. Ordinary Heroic Spirits summoned through the usual 'Heroic Spirit Summoning' can never be his match."
Scáthach stared directly at Rozen.
"The only thing that can deal with 'Heroic Spirit Summoning' is true 'Heroic Spirit Summoning.' I believe you understand this."
Modern Heroic Spirits summoning rituals were all derived from the original 'Heroic Spirit Summoning.' It was a system based on the decisive battle magic designed to confront major disasters, and the so-called Grand Servants were summoned through this system.
Modern summoning rituals, whether in the Holy Grail War or Chaldea's Fate System, were impossible to summon Grand Servants.
So, Scáthach wanted Rozen to use a genuine 'Heroic Spirit Summoning' now, summoning his own Servant.
If it was a real 'Heroic Spirit Summoning,' the Servant summoned might be able to confront Solomon.
This should be what Scáthach wanted to convey, right?
However...
"Even if it's a real 'Heroic Spirit Summoning,' it's impossible to casually summon a Grand Servant!"
Rozen rejected Scáthach's idea.
Just like ordinary summoning, it was possible to summon an incredibly weak Servant or even a top-tier Servant.
Similarly, even with true 'Heroic Spirit Summoning,' summoning a Grand Servant, especially a Grand Caster like Solomon, was undoubtedly very difficult.
In fact, Grand Servants could not be summoned by human efforts.
They were weapons of the world.
They were messengers of the root.
Unless a major disaster threatening the human world occurred, Grand Servants would never be summoned.
In other words, they could only be summoned by the world itself, and ordinary humans, even if they mastered the mysteries of 'Heroic Spirit Summoning,' could never summon a Grand Servant.
Moreover, whether a Servant with a Grand Saint Graph can form a contract with a human is an unknown variable.
Therefore, for Rozen to summon a Grand Servant seemed like a delusion.
Not to mention...
"I've never succeeded in any of my previous summonings. How can I summon one now?"
Rozen couldn't guarantee that this effort wouldn't be in vain.
Rozen believed that Scáthach understood this reasoning.
And did Scáthach understand?
Of course, she did.
This queen from another realm was an incredible sage. Anything Rozen could think of, she undoubtedly could too.
However...
"I've decided to place a bet on you."
Scáthach unexpectedly uttered these words.
"A bet?"
Rozen once again was bewildered.
But Rozen didn't mishear.
Scáthach indeed intended to take a bold gamble.
"In this Singularity, you have surprised me time and time again, shattered my understanding of you repeatedly, even mastering my Runes, the wisdom crystallization that even the gods desire, in just three days. Such astonishing talent, though it may be inferior to your abilities as a Master, is still remarkable."
Scáthach didn't take her eyes off Rozen's face even amidst the intense conflict on the battlefield.
"I can assure you that your innate talent in summoning is no less than that of King Solomon. If he can command seventy-two Demon God Pillars, you should be able to successfully summon a hero with extraordinary abilities."
This was Scáthach's most direct, pure, and candid thought.
"Previously, your summoning failures were indeed due to the high compatibility standards with the summoned Heroic Spirits. However, the so-called 'Heroic Spirit Summoning' can summon not just one Servant. The number of Heroic Spirits in the Throne is countless, and among them, there must be hundreds that are well-suited to you. Some of them are likely within your current capacity to summon, but despite numerous attempts, you failed. This proves that your innate talent in summoning is already unimaginably high. Under full effort in the summoning process, you yourself might not even be aware that you have been summoning Heroic Spirits with extremely high standards, causing the repeated failures."
Scáthach's explanation left Rozen dumbfounded.
In other words...
"The summoning you conducted, trying to summon a Heroic Spirit with excessive power, possibly even surpassing the limits, and attempting to summon the essence of the Heroic Spirit itself—that's also a possibility."
Scáthach asserted this.
"If you restrain your power, slow down the intensity of the ritual, simplify the process of the spell, you would have successfully summoned a new Servant a long time ago."
In other words, Rozen failed because he exerted too much force. Under the condition of going all out, he ended up summoning a Heroic Spirit with overwhelming power. As a result, that Heroic Spirit seemed to be an extraordinary figure, making it difficult to summon, which led to Rozen's continuous failures.
And turning the perspective around...
"The Heroic Spirit you are currently summoning possesses power strong enough to overwhelm your current abilities."
Scáthach spoke word by word.
"If you can successfully summon them, this hero should be able to threaten Solomon."
At least, Scáthach believed that, with her and Karna's level of Servants, even if Rozen couldn't succeed in summoning on the first attempt, with a few more tries, there should be a possibility of success.
However, Rozen had been continuously failing, indicating that the target of his summoning might be an incredibly significant figure.
Summoning such a figure might be the only chance for victory now.
"But my summoning has been failing."
Rozen felt somewhat troubled.
Regarding this...
"Your skills are already sufficient; what you lack is only power."
Scáthach enlightened Rozen.
"Now, the most suitable power is right in your hands."