A towering dark angel stands amidst the ruins of an ancient, crumbling cathedral, bathed in an eerie glow of violet and emerald light. Her pale, almost spectral skin is marked with glowing green runes that spiral along her arms, neck, and collarbones, pulsating faintly like whispers of forbidden magic. Her piercing eyes, an unnatural blend of gold and deep violet, burn with a haunting intensity, holding an air of both sorrow and menace. Her flowing black hair cascades in wild, untamed waves, streaked with faint silver threads that shimmer in the dim light. Her armor, forged of dark steel and adorned with jagged emerald inlays, is both elegant and menacing, etched with ancient glyphs that glow faintly with necrotic energy. A pair of massive, shadowy wings unfurl behind her, their feathered edges trailing faint wisps of green mist that dissolve into the air. In her hands, she clutches a glowing scythe, its blade crackling with ethereal green flames that cast flickering shadows across the ruins. The shattered cathedral around her is bathed in an oppressive atmosphere, with broken stained glass windows casting fractured beams of dim light onto the cracked stone floor. Vines of blackened thorns creep along the walls, glowing faintly with the same eerie light as her runes. The air is thick with drifting embers and faint whispers that echo through the hollow space, as if the cathedral itself mourns its fall. Hyperdetailed textures bring out the intricacies of her armor, the glowing runes, and the dark feathers of her wings, blending celestial grace with dark, foreboding power.