Arthur slumped against the cold rock, every muscle screaming in protest. The adrenaline that had carried him through two battles and a brush with a Hell Lord was gone, leaving him hollow with exhaustion.
The North Sea wind cut through his torn robes, sharp and cold, carrying with it the acrid stench of sulfur that lingered from Mephisto's departure. The ground where Voldemort had burned was still warm, smoke rising in thin trails against the gray dawn.
The Ancient One stood nearby. Her saffron robes hung untouched by the weather, her calm expression suggesting she found his exhaustion a teaching moment.
"You shouldn't have feared him so much," she said finally.
Arthur lifted his head, disbelief plain on his face. "Mephisto? The Hell Lord? I should've feared him less?" He gave a short, humorless laugh. "He could have crushed me like an insect."
She shook her head. "Not here. Not on Earth. His power is constrained when he ventures beyond his realm. On his own turf—yes, he is nearly omnipotent. But here? His manifestations are temporary, his strength diluted. He cannot stay long without weakening significantly."
Arthur frowned and forced himself upright despite his body's protest. "I knew he'd be weaker outside his realm, but—"
"But you didn't know by how much," she finished smoothly. "And instead of probing that limit, your first instinct was to flee."
"I was exhausted from fighting Voldemort," Arthur shot back, a defensive edge in his voice. "In my state, fighting a being of unknown strength head-on would've been suicide. If I'd been at full strength—"
"You would still have calculated the odds, found the risk unacceptable, and chosen retreat," she interrupted, gentle but unyielding. "That's what you do, Arthur. You build your choices on certainties—calculated risks with predictable outcomes. You only fight battles you've already won in your head."
Arthur opened his mouth to argue, then closed it, recognizing the futility.
"Real power," she continued, "the kind that matters when facing beings like Mephisto or worse—requires stepping into the unknown. It means making decisions with incomplete information and trusting your instincts when calculations fail."
"Easy to say when you've had centuries of practice," Arthur muttered. "I don't exactly have cosmic entities lining up to spar with me."
A small smile played at the Ancient One's lips. "Many would trade all their experience for your raw potential. You've mastered both wizarding magic and the mystic arts—two disciplines most struggle their entire lives to understand individually. In terms of pure magical power, you likely surpass even me."
Arthur blinked. "Stronger than the Sorcerer Supreme?"
He couldn't hide his disbelief. In the MCU and the comics, the strengths and powers were so confusing. The Ancient One was said to be the protector of Earth who had defended it from dimensional threats for centuries, yet she had been defeated by a Dormammu-powered Kaecilius. There were doubts everywhere, so Arthur could never be sure.
"I am, at my core, a human with extensive training and a few borrowed advantages." Her admission was matter-of-fact, without false modesty. "You are something else—enhanced by cosmic energy, wielding power both magic and dimensional. Yes, in raw terms, you are stronger."
"Then why do I feel so…" He gestured weakly, searching for the word.
"Weak?" she supplied. "Because you've never truly learned to fight. You've learned techniques, certainly. Studied spells, mastered forms. But you approach combat like a student reciting memorized answers, not a warrior acting on instinct."
She lifted a hand, and the air shimmered. An illusion unfolded between them—Arthur's battle with Voldemort in the Mirror Dimension, recreated in perfect, merciless detail.
"Observe," she said. "You chose to strike physically while invisible. He blocked you. But see this alternative."
In the illusion, Arthur, still invisible, instead of punching, pushed Voldemort's soul into the Astral Realm. The weak, fractured soul of Voldemort could not survive in the Astral form. It was torn apart by its instability, and it was game over.
"That was easy," Arthur murmured.
"Yes," the Ancient One agreed. "The long battle would have ended in seconds. Now, if you aimed only to subdue."
The scene reset, showing another variation. This time Arthur split into multiple copies, golden whips lashing from every direction, binding Voldemort. The real Arthur delivered one decisive blow.
"Or, if you'd relied only on wizarding magic…" The scene shifted again. The invisible Arthur pointed a finger, whispered two words. A flash of green, and Voldemort fell.
"The Killing Curse," Arthur said quietly.
"You were already trying to kill him," the Ancient One pointed out. "Yet you chose elaborate combinations over a spell specifically designed for that purpose. Why?"
Arthur struggled. "It feels... wrong. Evil. It's what they use."
"It's a tool," she corrected. "One that requires genuine intent to kill, yes, but still just a tool. You've killed with blades, with explosions, with your bare hands. How is a spell that grants instant, painless death worse than burning someone alive with Fiendfyre?"
Her logic was irrefutable, though the unease lingered. Perhaps it was conditioning from his previous life, or the stigma that surrounded the Unforgivables in this one. But she was right—if he was willing to kill when necessary, limiting his methods was foolish.
"I see your point," he admitted. "I overthink, under-react, and ignore obvious solutions because they don't fit my preconceptions."
"Progress," the Ancient One said with approval. "Now, about that final magic you used against Mephisto's illusions—that was quite remarkable."
"Ancient Magic," Arthur said. "The old texts describe it vaguely—raw magic that responds to pure need and emotion rather than structured spells."
"But did you notice what you actually did?" The Ancient One's eyes gleamed with interest. "You weren't drawing from your own core, as you do with wizarding spells. Nor were you channeling dimensional energy through yourself, as with the mystic arts."
Arthur frowned, replaying the moment in his mind. Now that she mentioned it, the memory felt… wrong, or at least different. "It never came from me or passed through me."
"Exactly," she said, her tone sharpening with approval. "You manipulated the ambient magic in the air directly, without internalizing it first. Wizards must draw magic through their cores, shape it with will, and then release it as spells. Even mystics channel external energy through themselves. But this—" she gestured lightly, "you commanded the magic to act on its own."
Arthur's exhaustion momentarily forgotten, he straightened. "That's why I've been making no progress in my studies. It felt so different because it was different. I isn't casting a spell—It is directing the ambient magic itself."
"A lost art," the Ancient One confirmed. "Perhaps the earliest wizards worked this way, before their cores developed as channels. Over time, structured casting became easier, more reliable. But ambient manipulation still lingers—buried, requiring overwhelming emotion and extraordinary talent to awaken."
Arthur absorbed this, the pieces falling into place. "That's why it's so rare, why no one writes about it. It doesn't begin with control—it begins with sensing the magic around you, then persuading it to act."
"Precisely. And that," she said, her expression thoughtful, "is why I have not seen anyone consciously wield it. The fact that you managed at all, even accidentally, suggests unusual sensitivity. Perhaps your various enhancements have made you more attuned to ambient magic than others."
Arthur let out a weary smile. "Another project for the ever-growing list."
"Along with actual combat experience." Her tone sharpened again, serious now. "You need real battles, Arthur. Life-or-death struggles where there's no time for calculations. Only then will you learn to access your full potential instinctively rather than deliberately."
"Unless you're suggesting I start provoking Hell Lords, I'm not sure where I'll find that kind of practice."
Her lips curved in the faintest smile. "Not the worst idea. But remember this—never enter Mephisto's realm. There, his power is absolute. You would not come out alive."
She raised a hand, and a portal sparked into being with effortless grace. Before stepping through, she paused, her gaze steady on him.
"Remember, Arthur: foreknowledge is useful, but it cannot replace instinct. The future you recall is already shifting because of you. True strength lies in adapting when prophecy fails and the unknown comes knocking."
With a whisper of folding space, she was gone.
Arthur sat in silence, letting the weight of her words sink in. His body ached, his magic was drained, and a Hell Lord now had reason to remember his name. By most measures, it wasn't much of a victory.
But Voldemort was gone. The wizarding war was truly over. And that, at least, counted for something.
Time to share the good news.