Here is a detailed final battle scene for the fantasy novel:

The skies over the Fields of Anduril darkened as Zarok's dragon horde descended, their deafening roars heralding doom. Anya stood resolute amidst the remnants of the kingdom's army, eyes fixed upon the enormous shadow of Zarok's dragon as it blotted out the sun. 

She had known this day would come. The mad dragonlord Zarok had already razed half the kingdom to ashes in his crazed war against mankind. Only Anya and her brave fighters stood between him and the capital. 

With a wordless battlecry, Anya raised her enchanted sword skyward. The blade blazed with holy fire, a beacon of hope against the winged tide of death. Around her, the soldiers steeled themselves, steadfast even in the face of oblivion.

The ground shook as the dragons slammed down, spewing deadly torrents of flame. Anya leapt and whirled through the inferno, deflecting gouts of fire with swirling strikes of her blade. She danced across the battlefield, rallying the troops to stand firm.

Arrows whistled through the smokey air as the archers loosed volley after volley at the dragons. Roars of pain cut through the din of battle as the missiles found their marks. Yet still the dragons kept coming, an endless nightmare swarm that blotted out the sky.

In the midst of the chaos, Anya saw him. Zarok, perched atop his immense black dragon, watching with malevolent pleasure as his minions decimated the human army. Anya charged straight toward him, carving a path through hordes of smaller beasts.

She vaulted onto a fallen dragon's wing and leapt straight at Zarok, blade cocked for a killing strike. But the dragonlord was ready. He parried her blow with his cursed greatsword, knocking her back. Anya rolled beneath a burst of flames and sprang to her feet. 

Dragon and warrior clashed again and again, locked in a deadly dance atop the winged titan. Below, the battle raged on between Zarok's endless hordes and Anya's dwindling army. She had to end this. With a final prayer, Anya charged Zarok once more.

Her opening came when Zarok reared back to summon more lighting. Anya did not hesitate. Her sword pierced his heart, his look of shock mirrors her own, as the defeated dragonlord toppled from his mount towards the ravaged earth below. 

It was over. But as Anya stared at Zarok's falling form, she realized the danger too late. His dying blast of dark magic hit her full force, knocking her from the dragon's back. Anya plummeted, the sounds of battle fading as the ground rushed up to meet her. She had won the war, but lost her life. Her legacy would live on in those she had saved.
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