Harry potter: I am the king of United Kingdom

Arthur's heart raced as the wind dragon emerged from his grimoire, its translucent, stormy form coiling above him. Its fierce emerald eyes glared at Magnus Grindelwald-Riddle, who still lounged on the throne of swords, his shadows curling protectively around him. The basilisk hissed menacingly beside Magnus, its massive body coiled and ready to strike.

Magnus laughed, his five-leaf grimoire hovering beside him, the shadowy tendrils weaving through the air like smoke. "Summoning a dragon, are we? Impressive, cousin. But power without control is meaningless."

Arthur's jaw tightened. He raised his hand, channeling his magic through his floating grimoire. The wind dragon roared, its serpentine body rushing forward, sending gusts of razor-sharp wind toward Magnus.

Magnus snapped his fingers, and the shadows erupted from his grimoire, forming a solid barrier that absorbed the dragon's assault. "You're skilled, Arthur, but you're no match for me. Surrender now, and perhaps I'll spare your little friends."

Arthur's eyes burned with determination. "I won't let you hurt anyone else!"

With a flick of his hand, Arthur summoned a vortex of wind blades that spiraled toward Magnus. The shadows twisted and coiled, deflecting the blades, but the force sent Magnus sliding back in his throne.

Magnus's smirk faltered. "So, you do have some fight in you. Very well. Let me show you true power."

He stood, raising his staff. Dark energy surged through the chamber, causing the very walls to tremble. The basilisk lunged at the wind dragon, its massive jaws snapping shut. The dragon dodged, circling the basilisk and striking with its talons. The two creatures clashed violently, their battle shaking the ground beneath them.

Meanwhile, Magnus extended his hand, the shadows forming into three cloaked figures. The dark figures moved with unnatural speed, their wands emitting jets of green light aimed at Arthur.

Arthur dodged, his movements enhanced by the gusts of wind swirling around him. He raised his grimoire, channeling its power to create a shield of whirling air that deflected the curses.

"Enough!" Arthur shouted, slamming his palm to the ground. A surge of wind erupted around him, throwing the cloaked figures back. One disintegrated into shadows, while the other two scrambled to recover.

Magnus clapped slowly. "Impressive. But let's see how you handle this."

He pointed his staff at the ceiling, and the chamber darkened. A massive shadowy serpent emerged, its glowing red eyes locking onto Arthur. It lunged, forcing Arthur to leap out of the way.

The wind dragon roared in response, abandoning its battle with the basilisk to protect Arthur. It collided with the shadow serpent, the two mythical creatures tearing into each other with raw elemental fury.

Arthur took the opportunity to close the distance between himself and Magnus. He thrust his hand forward, conjuring a concentrated blast of wind magic that hit Magnus square in the chest, sending him crashing into the throne.

Magnus coughed, wiping blood from his lip. "Not bad… but you'll regret that."

He raised his staff, and shadows surged toward Arthur, wrapping around his legs and arms, pulling him to the ground. The air around him grew cold as the shadows tightened.

"Any last words?" Magnus sneered, his staff glowing with dark energy.

Arthur gritted his teeth, his grimoire glowing fiercely beside him. Summoning every ounce of his strength, he focused his magic into a single, powerful pulse. The wind dragon roared in response, breaking free from the shadow serpent and diving toward Magnus.

The impact shattered the throne of swords and sent Magnus flying across the chamber. The shadows dissipated, and Arthur stood, panting, his body trembling from the exertion.

Magnus staggered to his feet, his grimoire still hovering beside him, but his confident smirk was gone. "This isn't over, Pendragon," he hissed. The shadows enveloped him, and he vanished into the darkness.

The basilisk, now without its master's command, retreated into the depths of the chamber, leaving Arthur alone in the wreckage.

Arthur sank to his knees, his grimoire glowing softly beside him. The wind dragon circled him protectively before dissolving back into the pages of the book.

He looked around the ruined chamber, his heart heavy. The battle had been won, but Magnus's words echoed in his mind. This wasn't over. Far from it.