"Hahaha!" Bellatrix's mad laughter echoed through the empty Ministry of Magic atrium, the sound bouncing off marble walls and golden fountains with chilling resonance.
"Crucio!" Harry shouted, directly casting the Unforgivable Curse without hesitation.
Bellatrix was knocked violently to the polished floor, and the precious prophecy orb in her hand also fell and shattered into wisps of silvery smoke that dissipated into nothing.
"Ahhhh!" She rolled around in absolute agony, her body convulsing as the torture curse worked its terrible magic.
'Kill her for the harm done to your godfather,' whispered seductive voices in Harry's ears. 'Blood vengeance is perfectly justified,' they continued with growing intensity. 'You know the spell to end this...'
Tempting whispers filled Harry's mind as a shadow emerged from directly behind him, and from that shadow stepped a curvaceous woman with an otherworldly beauty that seemed almost hypnotic.
Her eyes appeared to have serpentine pupils that gleamed with dangerous intelligence, and her dark hair writhed unnaturally to form small snakes that hissed softly around her face.
She gently embraced Harry from behind and whispered seductively in his ear with a voice like poisoned honey, 'Do it, Harry. Finish what you started.'
Harry shuddered at her touch and violently pushed Sister Tom away, pointing his wand directly at her with trembling hands.
Sister Tom waved her hand dismissively, directly knocking Harry's wand away with casual magical force that sent it clattering across the marble floor.
"So pathetically weak," Sister Tom said, looking at Harry with obvious disdain and disappointment.
Unfortunately for her plans, before she could take any action against the defenceless Harry, brilliant green flames suddenly lit up in the Ministry fireplace with supernatural intensity.
A long-awaited figure intervened in what should have been a pleasant reunion between Sister Tom and her intended victim.
"I really didn't expect you to have developed such particular preferences, Tom," Dumbledore said calmly as he walked out of the emerald flames, holding the legendary Elder Wand with practised confidence. "And I should mention that the Aurors are already on their way here."
Sister Tom looked with obvious envy at the powerful wand in Dumbledore's experienced grasp, then spoke with forced casualness.
"Hmph, isn't this appearance quite effective? It's twice as successful when dealing with those pathetic men in positions of power," she replied with a graceful wizard's bow that somehow managed to be both respectful and mocking.
"As for your Aurors, I'll have departed long before their arrival, and you should already be quite dead by then."
Sister Tom raised her wand with deadly purpose and fired a sickly green Killing Curse directly at Dumbledore without any further warning.
Both Bellatrix and Harry were pushed away by the tremendous magical airflow generated by the deadly spell. Sister Tom quickly sent the injured Bellatrix through the fireplace to transport her to safety.
Harry was pushed behind the massive fireplace to take cover, though he could vaguely see a graceful figure walking purposefully toward his hiding place through the chaos.
"Hahaha, you're getting old, Dumbledore!" Sister Tom laughed with forced merriment.
Though she was laughing loudly, her increasingly heavy expression revealed her actual state of mind and growing concern about the battle's outcome.
Although gaining tremendous power from Chaos had made her gradually less human in her thinking and reactions, she didn't dare throw herself completely into all-out battle with Dumbledore.
Because she still needed to guard constantly against someone else lurking in the shadows, someone far more dangerous than the headmaster. A certain dragon!
"Your worried expression doesn't tell me that you believe your own words, Tom," Dumbledore said with characteristic calm, then Apparated behind his opponent with fluid grace.
He flicked the Elder Wand with practised expertise, and the massive centaur statue decorating the Ministry atrium came to magical life and began galloping directly toward Voldemort with thundering hooves.
Sister Tom pulled downward with her wand, and a tremendous burst of supernatural flame shot out, completely melting Dumbledore's animated statue into puddles of molten metal.
However, Dumbledore flicked his wand upward in response, transforming the spreading flames into a cage of fire that surrounded Sister Tom on all sides.
Sister Tom's dark hair suddenly lengthened dramatically, condensing into serpentine shapes that opened their mouths and systematically devoured the magical flames with supernatural hunger.
Then she cast another Killing Curse with vicious intent, and Dumbledore Apparated away just as the deadly green light passed through where he had been standing.
Sister Tom's serpentine hair automatically tracked and aimed at where Dumbledore reappeared, then spat jets of magical fire with deadly accuracy.
The flames transformed themselves into a great fiery serpent that lunged forward to bite Dumbledore with fangs of pure magical fire.
Dumbledore raised his palm calmly and drew several perfect circles horizontally with his wand above his outstretched hand, his movements precise and controlled.
The nearby fountain was completely shattered by Dumbledore's magic, and he pulled all the water upward to sweep toward the attacking flaming serpent in a massive wave.
The enchanted water extinguished the magical flames while simultaneously enveloping Sister Tom within a prison of swirling liquid.
Magic flowed visibly between Dumbledore's palm and the Elder Wand as he worked his spells. He truly lived up to his legendary reputation as the strongest white wizard, using only basic Transfiguration principles to thoroughly dominate Sister Tom in combat.
Inside the crushing water prison, Sister Tom began experiencing serious difficulty breathing as the magical water pressed against her from all directions. With no other viable options, she was forced to use early the trump card originally reserved for her eventual confrontation with Aiden.
A torrent of black mist erupted violently from her chest, and Sister Tom transformed into a mass of dark smoke that rushed directly toward the hidden Harry with supernatural speed.
The black magical mist formed a miniature storm and squeezed painfully through the lightning bolt wound on Harry's forehead, entering his mind through that permanent connection.
Then Harry's green eyes were completely overtaken by absolute blackness, his hands raised involuntarily, and two wands flew directly into his outstretched palms.
Sister Tom's ghostly phantom appeared superimposed over Harry's familiar features like a mask of evil.
"Hahaha, Dumbledore!" she called out in Harry's voice, though the tone carried her characteristic cruelty. "How exactly will you fight me now? Are you really going to kill this innocent child to get to me?"
Sister Tom's maniacal laughter echoed throughout the Ministry atrium, filling the space with the sound of triumphant malice.
Dumbledore's consistently relaxed expression finally became truly grave as he contemplated the terrible dilemma she had created.
But suddenly Harry's possessed eyes changed from solid black to the familiar amber and deep blue heterochromia that Dumbledore recognised immediately.
Seeing this wonderfully familiar sight, Dumbledore breathed a sigh of profound relief.
"Heh, you hypocrite," Sister Tom taunted from within Harry's body. "You were ready to kill Harry Potter to get to me, weren't you? Come on then, show everyone your true hypocrisy."
Inside Harry's commandeered body, Sister Tom raised both stolen wands with deadly intent.
She was fully prepared for what would come next. As soon as Dumbledore moved to eliminate Harry as collateral damage, she could enter Dumbledore's body in that crucial moment of his moral relaxation and weakness.
From that point forward, no one in the wizarding world could possibly resist Sister Tom, who would possess both the Elder Wand and Dumbledore's legendary magical abilities.
"Well now, Sister Tom," came an amused voice from within Harry's consciousness. "You really do love playing possession games, don't you?"
On Harry's island of consciousness, a certain dragon stood up and casually dusted off his platinum robes with practised nonchalance.
"You..." Sister Tom's serpentine pupils contracted with recognition and growing horror.
The worst possible situation had occurred exactly as she had feared. Sister Tom finally understood that she had walked directly into an elaborately prepared trap.
The mysterious boy in elegant platinum robes opened his previously clasped hands with theatrical flair, and countless silver threads flew from his palms like living things.
Countless magical nets emerged from the depths of the collective unconscious sea, each one adorned with crystalline water crystals that sparkled with captured starlight.
In the swirling black mist that Sister Tom had stirred up throughout Harry's mind, the nets sparkled brilliantly like jewels scattered across dark velvet.
Then layer upon layer of the enchanted nets began enveloping Sister Tom's consciousness with inexorable purpose.
The crystalline crystals embedded in the nets began flowing like liquid light, continuously pouring their magical essence into Sister Tom's island of consciousness.
Countless stolen prophecies stirred up tremendous storms on Sister Tom's mental landscape, forcibly opening a permanent passage from the collective unconscious sea directly into Sister Tom's most protected mental body.
At the same time, the countless nets began spiralling and condensing together with mathematical precision, forming a massive anchor made of pure crystallised dreams and prophecies.
The anchor followed the newly opened passage and hammered itself firmly into Sister Tom's island of consciousness with tremendous force, completely fixing the passage in place and making it impossible for her to close or defend against future intrusions.
Sister Tom, with her consciousness severely damaged by the assault and her mental defences in ruins, could barely maintain her sense of self and hurriedly withdrew from Harry's island of consciousness.
Black mist swept outward from Harry's body as she fled. At that precise moment, Fudge and numerous other Ministry officials arrived through the Floo Network.
They immediately saw the beautiful woman materialising from the dark mist, their eyes firmly gripped by her extraordinary supernatural beauty that seemed to bypass rational thought.
But when the mysterious woman opened her eyes fully, those blood-red serpentine pupils that had haunted Britain for decades were instantly recognisable as everyone's worst nightmare.
"He's back!" Fudge couldn't prevent himself from blurting out these devastating words.
Nearby reporters frantically photographed both Fudge and Sister Tom, their camera flashes creating a strobe effect that illuminated the scene with harsh white light.
Fudge desperately wanted to make excuses and denials, but it was far too late for damage control.
Aiden also withdrew quietly from Harry's island of consciousness. Fudge immediately pointed at him and shouted with growing panic, "Arrest that criminal immediately!"
But none of the surrounding Aurors moved to obey his command. Their determined gazes were fixed firmly on Dumbledore, clearly showing where their true loyalties lay.
Amelia Bones stepped forward at this crucial political moment and gave her own orders with absolute authority.
"Imprison Voldemort's accomplice, Cornelius Fudge, for treason and collaboration with the enemy!"
Fudge looked desperately around the assembled crowd, finding only cold, indifferent faces staring back at him. His political career was finally over.