I'm in Yu-Gi-Oh!, but I'm also in Machine Ascension.

"Since I filled up enough Ritual Monsters with [Magic Key Cannon] during my first graveyard buildup, I can banish them again to Special Summon [Machine Force - Devastation Heavy Armour] from my graveyard to the field by its effect!"

"And this time, there are two!"

Just as Youfeng drew 6 cards in a row from his graveyard, he immediately banished 4 of them as cost. Then, he immediately summoned back to the field [Mech Force Annihilation Heavy Armor], which had been sent to the graveyard due to the effect of [Super Heavy Turret Train - Gustav's Maximum Cannon].

[Mech Force - Annihilation of Heavy Armament]

[Race: Mechanical]

[Attribute: Dark]

[Star rating: 10]

[Attack power: 4600]

[Defense: 4100]

"Now, its attack power reaches around 15000. It has to be said that this former party's mech force monster card has high attack and high defense, and it doesn't even have the limitation of being used once per turn..."

"It can even freely summon 3 cards in a row, or repeatedly switch between them..."

"Although the conditions for achieving this are indeed extremely demanding... I think it's practically a fake card by now..."

Soon, with Wan Zhangmu's profound and insightful exclamation, everyone nodded in agreement with this viewpoint.

...

The next second, after completing the Special Summon of two consecutive [Mech Force - Devastation Heavy Armor], Yufeng immediately played another Spell Card from his hand, depicting a silver-white human-faced pot:

"Now, I will activate this [Normal Spell] card from my hand again—[Pot of Desire]!"

And just as this white pot, which exudes a more peaceful and calm aura compared to the Pot of Greed, appeared in front of Youfeng.

Just as everyone was puzzled by this somewhat "abstract" card, Youfeng immediately selected two cards from the graveyard and threw them into the jar.

In an instant, the two cards swam around in the pot for a while before entering Yu Feng's Extra Deck and Main Deck respectively. The two decks were then shuffled and cut in Yu Feng's silver-white Duel Disk.

"This is... the [Super Heavy Turret Train - Gustav's Largest Cannon] that was just removed from the graveyard due to the cost of the [Heavyweight Love] effect..."

"So... Senior Youfeng will have to summon this giant cannon again?!"

In that instant, everyone seemed to have already guessed Youfeng's next move...

Asuka Tenjouin still shook her head, puzzled, and asked:

"If the effect has already been activated, then using it once per turn... is pointless!"

...

At that very moment, under everyone's watchful eyes, Youfeng immediately retrieved the [Super Heavy Turret Train - Gustav's Maximum Cannon] from his Extra Deck, which he had just retrieved from the Graveyard, and played it again:

"Now we have two more Level 10 monsters on the field. I will summon this powerful cannon once again!"

"I used two Level 10 monster cards, [Mech Force - Destroyer Heavy Armor], as Xyz Material to directly stack them in an Opa-style (overlay) manner, creating an Xyz Network!"

"Xyz Summon—Coming from beyond the railway with a deafening roar! Appear! Tier 10! [Super Heavy Turret Train - Gustav's Largest Cannon]!"

Soon, Yufeng placed the Rank 10 shiny black Xyz Monster card, which had already shocked everyone, face-down on the two Machine-Type monsters that had been stacked again as Xyz Material.

The forecourt, pulled by multiple trains, roared in again. The enormous cannons, so large they required three railway tracks to pull them, seemed to be giant cannons pointing skyward. Drawn by the trains, they once more arrived at the site.

[Super Heavy Turret Train - Gustav's Largest Gun]

[Race: Mechanical]

[Attribute: Earth]

[Class: 10]

[Attack power: 3000]

[Defense: 3000]

...

"Here it comes again...the giant cannon!"

At that moment, with the reappearance of the powerful [Gustav's Largest Cannon], Professor Chronos, who had just been hit by a cannon shot, subconsciously took a step back, his face full of lingering fear.

But quickly, after realizing what was happening, the teacher with the blond mushroom haircut immediately clenched his fists in a somewhat "furious" manner:

"Damn, damn, damn, damn!"

"You're feinting again, aren't you, Youfeng... What's next..."

Soon, just as Professor Chronos expressed his great dissatisfaction, declaring that he would no longer be afraid of Youfeng's cannon, a smile instantly appeared on Youfeng's lips. He immediately pointed at the [Super Heavy Turret Train - Gustav's Largest Cannon] that had been summoned again in the arena and activated its effect:

"Do you really think that way?!"

"That's a big mistake!"

"Now, at this moment, I will activate the effect of this [Super Heavy Turret Train - Gustav's Maximum Cannon] once again, removing one material and dealing you 2000 damage!"

In an instant, along with the Level 10 [Mech Force - Destroyer Heavy Armor] that jumped out of the graveyard and was now being used as XYZ material, being removed and sent back to the graveyard, Yuuki immediately activated the effects of the monsters on the field.

A loud "BOOM!"

The cannon barrel extended three full sections again, aimed at Professor Chronos opposite, and unleashed a fierce barrage!

"Ahhh~"

Caught off guard by this powerful and unexpected attack, Professor Chronos's pupils dilated rapidly, and he stared in horror at the shell that was getting closer and closer to him before collapsing to the ground.

But the massive cannonballs didn't spare any opponent, crashing straight down at Professor Chronos, who was holding his hands in front of him.

With a loud "boom," Professor Chronos's long golden hair instantly scattered as if he had been electrocuted, and he sat on the floor, looking disheveled and utterly miserable.

[Professor Chronos: LP2000→0! ]

...

At this momentous turn of events, Professor Chronos, the unfortunate duelist who was actually suffering all of this, as well as the students who were watching the battle, were all momentarily startled by the situation and stared at the scene before them in disbelief.

After a brief silence, the crowd began to murmur amongst themselves, expressing their confusion.

"Although I cannot understand it, I am deeply shocked!"

"What the hell... just happened?!"

"Director Youfeng actually activated a card effect that's limited to once per turn twice in a row?!"

...

At the same time, Professor Chronos, finally realizing what was happening, stood up instantly and argued his case, almost loudly:

"This isn't right! At least nine out of ten parts of this are wrong! You Feng!"

"You must have cheated, or used some kind of bug... You actually fooled the duel system?!"

"I've heard you're good at lying, and now I've caught you red-handed!"

Soon, even with his face contorted in a grotesque expression, Professor Chronos completely disregarded the disheveled state of his usually meticulously styled golden hair, which was now standing on end like a frizzy mess. He clenched his fists, stepped forward, and began to "argue his case."

Meanwhile, facing the questioning gazes simultaneously from Ryo Marufuji, Asuka Tenjouin, and the others, Yuuki shrugged, not immediately offering an answer. Instead, he looked with interest at Jaden Yuki, who was seated in the second row near the central dueling platform in the dueling classroom.

"So, as the question for this duel practice class, Jaden Yuki, why do you think I successfully activated the effect again just now?"

Soon, as Yuuki smiled at him, Yuuki Jaden, after being named, immediately stood up nervously!

"Oh... well, I did get a rough idea about that just now—just like what Senior Yufeng mentioned before about the difference between 'once per turn' and 'card name once per turn'..."

"The latter, in a sense, is the one that can truly be activated only once per turn... while the former is merely a restriction on the card's ability to activate its effect while it's on the field..."

"Therefore, Senior Youfeng was able to reset the number of bombardments for that instance by using the method of piling up graves, recycling, and then summoning again!"

...

Soon, amidst Jaden Yuki's confident voice, Yuuka nodded in satisfaction and gave Jaden Yuki a thumbs-up:

"That's right, Judai... Your answer is perfect!"

Upon hearing Yuuki's praise, Yuuki Jaden's face showed a look of great surprise.

At the same time, Tenjouin Asuka, Marufuji Ryo, Manjoume Jun, and others quickly reacted. Because their understanding of card battles had already reached a certain level, they immediately understood the underlying logic of how this effect could be activated, almost immediately upon hearing Yuki Jaden's slight voice.

Many people also expressed their feelings:

"Ah... Senior Youfeng is actually able to fully utilize this characteristic, and even perfectly develop tactics around it. I have to say..."

"Senior Youfeng is indeed a man who has elevated card battles to a new level!"

Looks

...

As everyone's eyes shone with immense awe and reverence as they looked at him, Youfeng gathered his Duel Disk, neatly storing the entire [Mud Truck] deck back into its card box. He then smiled and asked the crowd a question:

"So, students... here's the question..."

"In card battles, what is the only absolute truth that can make you invincible...? Have you figured it out yet?"

As You Feng asked the question with a smile, everyone was stunned for a moment, and then they fell into a discussion.

But soon, faced with a variety of conflicting answers, Youfeng also seemed unable to find a satisfactory answer and shook his head:

"Hmm...that means, we completely prevent the opponent from playing any cards!"

At that moment, when Yu Feng uttered the truth that "the essence of Yu-Gi-Oh! is to make it impossible for the opponent to play Yu-Gi-Oh!", everyone was slightly stunned. They were instantly shocked by this very direct answer and looked at Yu Feng with surprise.

...

"It sounds strange, but... upon closer examination, it actually makes a lot of sense..."

After letting out a soft, insightful sigh, Jun Manjou, who had been showing great interest in Yuuki's [Catapult Turtle] and [Cannon] in the audience, immediately nodded as if he had understood something.

At the same time, Marufuji Ryo also nodded slightly and said:

"Hmm... so in a sense, rolling tires can be considered a powerful way to hinder the opponent..."

Soon, as everyone chimed in with their opinions and even discussed strategies for adjusting their decks, Jaden Yuki, still stuck in the "first generation" stage and somewhat oblivious to the world, immediately gripped his card box tightly.

"Well... I still have great confidence in the combined power of my [HERO] deck!"

...

Meanwhile, at the entrance of this enormous dueling classroom, Daitokuji-sensei, who had appeared out of nowhere, wearing glasses and with a kind expression, crossed his arms and said with a slight sigh:

"Is it really a good idea for Director You Feng to teach these kids these dueling techniques right now...?"