Certainly, below is the translated text with the given instructions:
The night sky suddenly darkened again, the stars trembled because of it. The sky split open with a dazzling, profound fissure, as if the gates of the cosmos were slowly pushed open by invisible hands. An indescribable force surged forth from the crack.
The evening breeze no longer gently caressed, but turned into a stormy howl, carrying power that could destroy the heavens and the earth. The demonic king of chaos tore through space, arriving amidst the darkness. Its enormous blue body seemed surrounded by twisted space and violent energy, each step causing the field to tremble.
Phantom Demon Emperor Rabiel, descends!
[Phantom Demon Emperor Rabiel, Attack Power 4000]
"Another Phantom Demon so soon..." Tragodia looked at Yugen with eyes increasingly murderous, "Fujiki Yugen, truly a dangerous person who cannot be allowed to survive..."
"Battle." Yugen directly commanded the Phantom Demon to attack, "First, Thunder Emperor Harmon, attack 'Desolate Dead'.
Thunder of Lost Joy!"
Harmon once again summoned celestial thunder, accompanied by the roar of the Phantom Demon, descending like the judgment of gods, the lightning struck the mummy with a grotesque shape, shattering it to pieces.
[Tragodia, LP3500 → LP3400]
"Thunder Emperor Harmon's effect. When this card destroys an opponent's monster in battle and sends it to the graveyard, it deals 1000 damage to the opponent."
Yugen then waved his hand.
"Atonement from Hell!"
Harmon seemed to roar again, sound waves aggressively swept toward Tragodia. Professor Mackenzie swayed back two steps, his coat flaring dramatically.
[Tragodia, LP3400 → LP2400]
"But the effect of the Continuous Magic 'Dark Sun' has also been activated, you haven't forgotten, have you?"
Tragodia said gloomily.
"Dark Sun, when my monster is destroyed, it recovers Life Points equal to the destroyed monster's attack power. The Desolate Dead had an attack power of 3900 when it was destroyed, therefore my Life Points are restored!"
[Tragodia, LP2400 → LP6300]
"The more they fight, the more Life Points he seems to gain." Judai frowned.
"Really a troublesome guy."
Chazz commented, simultaneously thinking to himself whether he could win against such a person.
"Also, another Cover Card has been activated." Tragodia stated, "Trap Card 'Descendant of the Dead'. When a Level Five or higher monster is destroyed in battle, two Level Three or lower monsters are Special Summoned from the Deck." (Original Card)
He raised the Duel Disc, and two beams of golden light seemed to automatically shoot from the deck, landing on either side, transforming into the forms of two dragons.
"Special Summon two 'Dorudora'!"
[Dorudora, Defense Power 1200] x2
"A monster with a self-reviving ability as its last will?" Yugen understood.
The effect of Dorudora, if this card on the field is destroyed and sent to the graveyard, it can be activated at the end phase of that turn, Special Summoning this card. This effect triggers regardless of battle or effect destruction and its 'revival at the end phase' trait makes it difficult for the opponent to use removal methods during Main Phase 2 to eliminate it.
This is one of the few monsters from early on that possessed this advantage, allowing it a high probability of surviving to the next turn as a resource for an Upper-level Summon.
"Therefore, even using Rabiel to attack would only give away 1500 points of Life Points for free, so I won't attack." Yugen shrugged, pointing to the opposite side, "But, when you summon monsters, the effect of Phantom Demon Emperor Rabiel has also been activated."
Tragodia narrowed his eyes: "Phantom Demon's effect?"
"Rabiel summons a number of 'Phantom Demon Derivatives' on its own field equal to the number of monsters your opponent summons."
The blue light on Rabiel's body flashed, splitting into two beams of light that fell to its left and right sides, respectively transforming into the form of demons crouching on the ground.
[Phantom Demon Derivative, Defense Power 1000] x2
"Phantom Demon Derivatives cannot declare attacks, but apart from that, they can be used without restriction as tribute for effects or Upper-level Summons."
Yugen casually waved his hand.
"Finally I'll set one card face-down, ending the turn."
Tragodia gazed darkly at Rabiel.
"I see, quickly accumulating derivatives to increase the number of monsters, and derivatives have almost no usage restrictions. Rapidly increasing resources is this Phantom Demon's ability..."
No, he sensed there was more to it. Be it Harmon or Rabiel, those Phantom Demons likely hid other powers.
Little Lobster considers himself invincible, handed his heart over in plain view without flinching, facing several Grand Priests without batting an eye, and cursed even when sealed into a tablet, never conceding to anyone. Yet three thousand years later, facing the modern youth, he felt the greatest pressure in his life.
Judai and Chazz, also absorbed in watching the match, suddenly heard a voice behind them: "Wow, this is a Phantom Demon?"
Turning around, they saw a student from the Yellow Dormitory standing behind them, staring in amazement at Yugen's field with the two large Phantom Demons.
"So the rumors are true, Phantom Demons were really... "
"Mitsuzawa? When did you get here?" Judai asked, surprised.
"I've been here for a while." Mitsuzawa replied naturally, arms crossed, "A duel with a Phantom Demon personally controlled by the Duel King, such a duel might be rare to witness in a lifetime.
You wouldn't think that as a duelist, I would miss this opportunity, would you?"
"No, what I meant was, how did you know... "
Mitsuzawa replied helplessly, "When the Phantom Demon descends, the entire island can hear the rumbling thunder. I could see that towering image from the window of the dormitory... only someone blind would miss it, right?"
"Oh, that makes sense." Judai nodded.
Chazz recalled something: "Wait, so if you noticed the commotion here, does that mean... "
Earlier, the two were so focused on the duel that they didn't pay attention to their surroundings. Now taking a careful look around, they realized, indeed, they found students and teachers everywhere, pointing towards them.
Unnoticed, the duel between the Duel King and the Dark Demon King had turned into a kind of educational exhibition, almost awakening half of Academy Island, causing them to not sleep and to gather to watch and learn late at night.
Tragodia's face grew darker.
It was all due to this unlucky Duel King. He had skilfully diverted attention, silently infiltrated, defeated the elf without anyone noticing, and reclaimed the heart—a perfect opportunity for infiltration.
Now the situation was utterly botched, watched like a sideshow by the entire academy, lacking only a large screen to broadcast it.
"Haha, fine then. If this is what you want... then I will show Duel Academy, and the modern duelists, how big their eyes need to be to witness."
Tragodia declared fiercely.
"How their king and the Phantom Demons are crushed by me ruthlessly!"