Thane's final assault crashed against the amulet's radiant barrier, a wave of pure darkness against defiant light. The impact reverberated, shaking the very foundations of the chamber. Cracks spiderwebbed across the obsidian floor, mirroring the strain on Thane's corrupt form. He roared, a sound of raw, agonizing frustration, as the amulet's light began to overwhelm him, pushing him back, inch by agonizing inch.
Isla, eyes glowing with Elara's power, felt a surge of energy she'd never known. The amulet pulsed, its warmth spreading through her veins, strengthening her resolve.
"Kai," she gasped, her voice laced with Elara's resonance, "we have to break the source of his power."
Kai, leaning heavily on a fractured pillar, pointed towards a pulsating, obsidian shard embedded in Thane's chest. "That shard… it's the key. Destroy it, and his darkness will crumble."
With a final, desperate surge, Isla directed the amulet's light, focusing it into a searing beam. The golden energy struck the obsidian shard, a blinding flash erupting as darkness and light collided. The shard, unable to withstand the concentrated power, shattered, sending shards of corrupted obsidian scattering across the chamber.
Thane screamed, a sound of pure, unadulterated agony, his form dissolving into swirling shadows. The darkness, no longer anchored, retreated, leaving behind a chamber bathed in the soft, golden light of Elara's legacy.