The door to Gaius' quarters creaked open, and Merlin stepped inside, the familiar scent of herbs and potions a small comfort. "Gaius," he called out, his voice urgent. "We have a problem."

Gaius looked up from his work, his eyes reflecting the flicker of candlelight. "Merlin, what's wrong?" he asked, concern etching his features.

Before Merlin could reply, the door burst open and Arthur charged in, his expression one of controlled urgency.

"Merlin, Gwen told me it was important," he said, looking from Gaius to Merlin. "What's happened?"

Merlin took a deep breath, steadying himself for the revelation to come. "It's Morgana," he began, locking eyes with Arthur. "She knows about the Tome of Ashkanar."

Gaius' face paled, his shock evident as he absorbed Merlin's words. "That is most troubling indeed."

Arthur, still catching up with the conversation, furrowed his brow in confusion. "The tome of what now?" he asked, looking between his manservant and the physician. "Why is this important?"

Merlin felt a knot form in his stomach, the sickness of fear mingling with the burden of his secret. He had hoped to never reveal this part of his life to Arthur, but the threat Morgana posed left him with little choice.

"Arthur," Merlin began, his voice laced with a hesitance that betrayed his inner turmoil. "The Tome of Ashkanar is an ancient book of magic, and it's come into my possession."

Arthur's disbelief was palpable, his voice rising with each question. "How did you come across a book of magic, Merlin? And why didn't you tell anyone? You know that possessing magical artifacts is just as bad as being a sorcerer in this kingdom. If my father found out…"

Merlin interrupted, the urgency clear in his tone. "I know, Arthur, I know. Morgana already threatened me with that. She appeared before me in the stables, just now."

Gaius, who had been silent, now stepped forward. "Sire, we must tread carefully. This is a matter of great delicacy and danger."

"I'll answer your question," Merlin met Arthur's gaze, the weight of his secret now a burden shared. "You remember the hunting trip we went on a few days ago? The haunting melody in the woods that scared the horses? And my horse bolted into the woods? Well at some point, I got unseated. When I regained my bearings, I felt this pull, like there was something calling out to me from beneath the leaves. That's where I found the book."

Arthur's expression shifted from confusion to concern. "Okay, but why didn't you tell anyone? Why didn't you hand it in?" he pressed, his voice rising with each word.

Merlin hesitated, the truth a heavy cloak around his shoulders. "Because I knew what it meant for someone like me to be found with it," he admitted.

Arthur paused, a new realization dawning on him. "What do you mean by 'felt'?" he asked slowly, his eyes narrowing. "Most people can't feel magic…" The implication of Merlin's words hung between them, and Arthur looked as though he was on the verge of a conniption, his world view tilting on its axis.

Merlin took a deep breath, ready to face whatever came next. "Yes, Arthur," he said quietly. "I can feel magic because I have magic. I've always had it. I didn't ask for it, but it's a part of me. And Morgana knows I have that," he finished, gesturing to the space where the Tome of Ashkanar was hidden away.

The room was silent as Arthur processed the revelation, the implications for his friend, his kingdom, and himself. Merlin waited, the fate of his secret now in the hands of the future king of Camelot.

Arthur's face reddened with fury, his voice rising with each word. "I can't believe you kept this a secret. Both the book and your magic?" he thundered. "For all these years you've been a sorcerer!"

Merlin stood his ground, though his heart raced with fear. "I didn't have a choice, Arthur," he shot back, his own frustration evident. "I didn't want to be executed! I've never hurt anyone. All I've ever done is try to protect you, you great tosspot. You're going to be the greatest king this land has ever seen, and it's my destiny to ensure you get there."

Arthur shook his head, his anger unabated. "All these years, Merlin, you've kept this from me," he said, his voice heavy with a sense of betrayal. "You can't possibly understand how I feel right now."

Merlin's eyes were filled with regret. "I'm sorry, Arthur," he said quietly. "I truly am."

It was then that Gaius stepped in, his voice a calm in the storm. "Sire, please understand that Merlin's actions, though secretive, have always been in the best interest of Camelot. His magic has saved us more times than you can know, and it has always been wielded with the purest of intentions."

Arthur's anger was still present, but Gaius's words seemed to take the edge off. He looked between the old physician and his manservant, the conflict clear in his eyes. The revelation of Merlin's magic had changed everything, and it would take time for the prince to fully grasp the weight of what had been revealed.

Arthur turned to Gaius, his voice laced with a sense of betrayal. "You knew all along?" he asked, the words heavy with accusation.

Gaius met Arthur's gaze, his expression solemn. "Yes, Sire," he admitted. "His mother sent him to me so that he could learn to control his magic and use it for the right reasons. Merlin's gifts have always been meant for good, for the protection of Camelot."

Arthur grumbled under his breath, his anger simmering as he processed the depth of the deception. He looked back at Merlin, whose eyes were wide with apprehension, waiting for the prince's judgment.

"I'm not going to have you executed, Merlin," Arthur finally said, his voice firm but not unkind. "But you and I will be having a very long chat later."

Merlin's shoulders slumped as he breathed a sigh of relief, the immediate threat of execution lifted. Yet, the promise of a 'long chat' loomed over him, a conversation that would undoubtedly change the course of their relationship forever.

Arthur's focus shifted back to the pressing issue. "The Tome of Ashkanar," he said, his tone now one of command. "Why is it significant? Why would Morgana want it?"

Merlin and Gaius exchanged a glance before Merlin spoke up. "The Tome of Ashkanar was created by the Obsidian Order," he explained. "They were a society of dark sorcerers who practiced forbidden magic. They used it to bend the will of others, to control minds, and to alter the fabric of the world itself."

Gaius continued, "Their magic was so dangerous that it threatened the very balance of nature. The Order was eventually disbanded, but the tome remained. It contains their knowledge, their spells, and the essence of their power."

Arthur processed this information, his expression growing darker. "So if Morgana wants the book," he deduced, "it means Morgause wants it too. And they've probably been in contact with someone who wants to revive the Obsidian Order."

Merlin nodded, the severity of the situation clear in his eyes. "Exactly. And if they succeed, it could mean disaster not just for Camelot, but for all of Albion."

Arthur clenched his fists, his resolve hardening. "Then we must ensure the tome remains safe. We cannot allow the Obsidian Order to rise again. We'll need to protect the tome at all costs and find out who is behind this plot with Morgana and Morgause."

The three of them stood in silent agreement, aware that the path ahead would be fraught with danger. But together, they were determined to protect Camelot from the shadows that sought to engulf it.

Merlin's expression was grave as he shared the ultimatum he'd been given. "But here's the thing," he said, his voice low. "When Morgana appeared in the stables, she gave me until midnight to turn the book over to her. If I don't, she threatened to reveal my secret to the entire kingdom."

Arthur's jaw set in a hard line, the prince within him rising to the challenge. "We won't let it come to that," he declared, determination clear in his eyes. "We'll find a way to keep both you and the tome safe, Merlin. We face this together."

The solidarity in Arthur's words bolstered Merlin's spirits. With the prince by his side, and Gaius's wisdom to guide them, they had a fighting chance against the darkness that threatened to encroach upon Camelot. The clock was ticking towards midnight, but they were not without hope or options. The battle for Camelot's future was just beginning.

Merlin paused, the gears turning in his head as he considered their limited options. Finally, he looked up, his decision clear. "We have to destroy the book," he stated firmly.

Gaius raised an eyebrow, concern etched into his features. "Do you think that's wise, Merlin? The book is ancient and powerful. Its destruction could have unforeseen consequences."

Arthur, who had been following the conversation closely, chimed in with a practical concern. "But even if we destroy the book, won't Morgana just expose your secret anyway?"

Merlin shook his head, a plan forming in his mind. "Not if I put a spell on the book to self-destruct 10 to 15 minutes after it's been handed over. I could also spell the book shut so that it can't be opened. That way, Morgana gets what she wants, but it will be too late by the time she realizes the book is gone."

The three of them mulled over the idea. It was risky, but it might be their only viable option to protect both Merlin's secret and the kingdom.

"Could such a spell work?" Arthur asked, looking to Merlin with a newfound respect for his manservant's hidden talents.

"It's possible," Merlin replied, confidence growing in his voice. "I've never attempted anything of this scale before, but the magic within me is strong. I believe I can do it."

Gaius nodded thoughtfully. "It's a bold plan, Merlin, but it just might work. We'll need to prepare carefully, and you'll need to muster all your strength and focus for the spell."

Arthur with his resolve clear, stated, "Then it's settled. We'll go ahead with Merlin's plan. Let's prepare for tonight. We'll protect Camelot and keep your secret safe, Merlin."

Gaius retrieved the book from its hiding place and sat it on old wooden table and Merlin turned and prepared himself.

Merlin's eyes widened as a crucial detail from his encounter with Morgana suddenly resurfaced in his mind. "She mentioned scrying," he blurted out. "The art of seeing things from afar. She could have been watching us this whole time!"

Gaius frowned, a mixture of concern and frustration crossing his face. "Merlin, why didn't you tell us this before we discussed destroying the book?"

Merlin shuffled his feet, a sheepish expression taking over. "I... I forgot," he admitted, feeling the weight of his oversight.

Arthur shook his head, a half-smile forming despite the gravity of the situation. "Oh, Merlin, you're an idiot," he said, the familiar banter returning for a moment. "At least some things don't change."

Merlin gathered his focus, the urgency of the situation lending him strength. He raised his hands, palms facing outward, and began to chant in the language of the Old Religion.

"Circulum occultatum, protege nos ab oculis errantibus," he intoned, the words flowing from him like a river of power. A shimmering veil of magic spun from his fingertips, weaving through the air and encasing the room in a protective shield.

"This spell will shield us from prying eyes," Merlin explained, his voice steady with the confidence of his craft. "No one will be able to scry our location or see what we're up to. We're safe to proceed with our plans."

Arthur and Gaius watched in awe as the last of the incantation took hold, the room now secure from any magical surveillance. With Merlin's spellwork, they had gained precious privacy to strategize against Morgana and the looming threat of the Obsidian Order.

Merlin than turned to stand before the ancient Tome of Ashkanar, his hands steady as he prepared to cast the spells that would seal its fate. With a deep breath, he began to chant in the old tongue, the words resonating with power as they filled the room.

"Claustrum arcanorum, obice lignum et lapidem," he intoned, his voice growing stronger with each syllable. The air around the book shimmered, and an ethereal lock formed over its cover, a lock that no ordinary magic could open.

"This locking spell will require a special artifact to unlock it," Merlin explained to Gaius and Arthur, who watched with bated breath. "Only the touch of the Phoenix Stone can open the book now."

With the first spell complete, Merlin moved on to the next. "Tempus destructum, ad decimum et quinque post medianoctem," he continued, the magic of the spell weaving into the fabric of the tome. A faint glow enveloped the book, the sign of the self-destruct spell taking hold.

"The book will now self-destruct at ten past midnight," Merlin said, a note of finality in his voice. "If Morgana tries to open it before then, without the artifact, she'll find it impossible. And if she waits until after, it will be too late."

Arthur nodded, his expression one of grim determination. "Good work, Merlin. Let's hope this is enough to stop Morgana and protect Camelot."

As the last echoes of the spell faded, the Tome of Ashkanar looked no different than before, but the magic contained within was now a ticking time bomb, set to ensure the safety of Merlin's secret and the future of the kingdom.

Meanwhile, In a shadowed forest, a campfire flickered, casting an eerie glow on the faces of those gathered around it. Morgana strode into the clearing, her cloak billowing behind her, a triumphant smirk on her lips.

"I've done it," she proclaimed, her eyes alight with malice. "I've cornered Merlin. He knows that I know his secret, and he knows that I know of the Tome of Ashkanar. If he doesn't hand it over by midnight, I'll expose him, and Uther will have no choice but to execute him."

Morgause's smile was like the crescent moon, sharp and bright. "Excellent, sister. Once we have the tome, our power will be unmatched."

The dark sorcerer, a figure shrouded in mystery, remained unmoved. His eyes, like two black stones, seemed to absorb the light around him. "We shall see," he intoned, his voice as deep as the earth. "I will not be satisfied until the book is in our hands."

Raising his arms, he began the scrying ritual, his fingers weaving through the air, tracing symbols only he could see. The surface of a nearby pool of water shimmered, and an image appeared: Merlin, leaving the stables in haste, his face etched with worry.

The sorcerer's hands stilled, and the image faded. "He knows we're coming for him," he said, his tone unreadable.

Morgause's eyes narrowed. "Do you think he'll tell Arthur?"

Morgana laughed, a sound devoid of joy. "Not if he values his life. Arthur, as Camelot's future king, would uphold his father's laws above all else."

The three of them sat in silence, each lost in their own thoughts. The night grew darker, the stars hidden behind a veil of clouds, as if the heavens themselves were holding their breath, waiting for the stroke of midnight.

The night air was thick with anticipation as the clock's hands inched towards midnight. The dark sorcerer stood, his cloak billowing in the wind, his eyes reflecting the flickering flames of the campfire.

"We must bind ourselves to a pact," he declared, his voice echoing through the trees. "A magical vow that ensures none of us can betray the others. It will strengthen our resolve and unite our powers."

Morgause's eyes narrowed, her mind racing with the implications of such a vow. She was no stranger to the treacherous paths of magic, and she understood the stakes. "A pact," she mused, "but one that will last only for the next 24 hours. No more, no less."

The sorcerer nodded, a sly grin spreading across his face. He extended his hand, a dark energy swirling around it. "Agreed. Let us begin."

Morgana watched, her heart pounding with a mixture of excitement and fear. She knew the power of a magical vow, and she trusted her sister's judgment.

The three of them joined hands, forming a circle around the fire. The sorcerer began to chant, his voice low and resonant. "Vinculum fraternum, nos unite ad causam," he intoned. The air around them grew heavy, the magic of the vow weaving through their joined hands.

"Per viginti quattuor horas, non poterimus invicem prodere," Morgause continued, her voice steady and clear. A light began to glow at the center of their circle, signifying the binding of their pact.

As the vow was sealed, a surge of power coursed through them, a tangible sign of their newfound unity. They knew that any attempt to break the vow would result in dire consequences, but none of them intended to falter.

The pact was set, a temporary alliance forged in the shadows of the night, each member bound to the other, their fates intertwined for the next 24 hours. With their powers combined, they were a formidable force, and they were ready to claim the Tome of Ashkanar and all the power it promised.

As the night air hummed with magic, the dark sorcerer, stood tall and imposing before the flickering flames. "The time for concealment has passed," he declared, his voice resonating with an ancient power. "I am Malakar, a direct descendant of Ashkanar himself. The blood of the founder of the Obsidian Order runs through my veins. The Tome of Ashkanar is my birthright, and I have waited long to reclaim it."

Morgause, with the poise of one who commands the unseen forces, nodded in acknowledgment. "I am Morgause, High Priestess of the Triple Goddess, daughter of Vivienne, a witch of great renown. My mother taught me the secrets of the Old Religion, to commune with the powers that govern life, death, and fate. The tome will serve as a conduit to amplify our magic, to bring about the change we seek."

Their gazes then turned to Morgana, whose story was woven into the very fabric of Camelot's recent history. Malakar's eyes bore into hers, seeking the truth of her commitment. "And you, Morgana, once the king's ward, now revealed as his daughter. Is your resolve as strong as your lineage suggests?"

Morgana's response was immediate, her voice laced with venom. "Doubt my resolve at your own peril, Malakar. My desire to see Uther Pendragon fall is unmatched. My vengeance is not just a flame; it is an inferno that will consume him and all he holds dear."

The pact they had formed earlier in the night now seemed even more potent with their true identities revealed. Bound by their vow, their collective might focused on a singular goal, they stood ready to face whatever challenges lay ahead in their quest for the Tome of Ashkanar.

Back at the castle, the great pendulum of the castle clock swung with a gravity that seemed to echo the tension in Merlin's heart. With only minutes to spare before the stroke of midnight, he stood in Gaius' quarters, the Tome of Ashkanar heavy in his hands. He drew a deep breath, his chest tight with anxiety.

Gaius, ever the pillar of wisdom and calm, placed a reassuring hand on Merlin's shoulder. "Merlin, you must calm yourself. Your magic is strongest when your mind is clear."

Arthur, clad in chainmail, ready for whatever might come, stepped forward. His eyes, usually so full of command, now held a glimmer of brotherly concern. "You can do this, Merlin," he said firmly. "I have faith in you."

Merlin met Arthur's gaze, drawing strength from his words. With a nod, he clutched the tome closer and made his way through the dimly lit corridors of the castle. Each step seemed to resonate with the ticking of the clock, a steady reminder of the impending moment.

As he reached the stables, the familiar scent of hay and the soft nickering of horses greeted him. The shadows cast by the moonlight through the open doors danced across the stone floor, creating a patchwork of light and dark.

Merlin positioned himself in the shadows, the tome clutched to his chest. The air was still, the world holding its breath as the final minutes ticked away. He closed his eyes, focusing on the task at hand, on the protection of Camelot, and on the hope that his plan would succeed.

The clock began its chime, the sound carrying through the night, heralding the arrival of the witching hour. Merlin's grip on the tome tightened, and he waited for Morgana to appear, ready to face whatever came next.

The stables were quiet, the only sound the soft shuffling of the horses and Merlin's measured breathing. Suddenly, the air shimmered, and Morgana materialized before him. Her arrival sent a ripple of unease through the horses, their hooves clattering against the stone floor.

"I see you've brought the book," Morgana taunted, her eyes glinting with malice. "Guess you didn't want your little secret to be found out after all..."

Merlin, his face a calm facade, extended the tome towards her. "Well, here it is," he said, his voice betraying none of the fear that gripped him.

Morgana, still new to the nuances of magic, couldn't sense the layers of spells Merlin had woven into the tome. To her, it was just an artifact of power, indistinguishable from the enchantments placed upon it.

"You know, Merlin," she continued, her voice laced with scorn, "I never would have pegged you for a sorcerer. More an idiot that followed Arthur around like the perfect little manservant you so obviously pretend to be."

Merlin's eyes remained steady, his response measured. "I've never pretended to be perfect, Morgana. And you'll never know what I've done for him. He might one day learn the truth."

His words were a shield, guarding the fact that Arthur already knew, that despite the prince's initial anger and wariness, trust still lingered between them. Merlin offered the book, a silent challenge in the exchange, and waited for Morgana to take the bait.

Morgana's fingers closed around the tome, and she could feel the thrum of magic pulsing through its ancient pages. It was a sensation that stirred both awe and hunger within her.

Merlin watched her, his expression unreadable. "Why are you doing this, Morgana?" he asked, his voice a mix of curiosity and sadness. "Why seek such power?"

She looked up from the book, her eyes meeting his. "Power is the only currency in this world, Merlin. You, of all people, should understand that," she said, her voice tinged with bitterness. "I cannot fathom why you would choose to stay and serve, knowing that if Uther ever discovered your secret, you'd be just another dead sorcerer."

Merlin's gaze did not waver. "There are things more important than power, Morgana. There are things worth protecting, worth serving."

Morgana's scoff echoed through the stables, a sound of derision that seemed to mock the very stones of Camelot. "Destiny?" she sneered. "A convenient excuse for the weak."

Merlin's response was unwavering, his voice a steady beacon in the darkness. "It is my destiny to serve Arthur, not Uther. One day, Arthur will be the greatest king there ever was."

Morgana's laughter was hollow, devoid of true mirth. "Yeah right," she mocked. "As if destiny could be so easily foretold."

Merlin's eyes locked onto hers, a glint of prophecy in their depths. "It is not a matter of 'if', Morgana. It is fact. It has been prophesied."

The word hung between them, 'prophesied', and for a moment, Morgana's certainty wavered. The idea that destiny had already laid its claim on Arthur gave her pause, a flicker of doubt in her otherwise resolute stance.

But the pause was fleeting, and her expression hardened once more. "Prophecies can be broken, Merlin. Or have you not learned that yet?"

With the book in her possession, Morgana turned to leave, the shadows of the stables seeming to cling to her as she disappeared into the night, leaving Merlin alone with his thoughts and the hope that his plan would succeed.