High Fantasy Sorceress Spellcasting Poster

A dramatic graphic poster art design featuring a 26-year-old high fantasy sorceress of regal demeanor, casting a powerful arcane spell. She possesses long, waist-length silver hair floating upward as if defying gravity, striking violet eyes glowing with inner power, and a sharp expressive face. She is clad in an intricate deep sapphire velvet robe adorned with hand-stitched silver constellation embroidery, high-collared filigree shoulder pauldrons made of polished silver metal, and a polished moonstone pendant resting on her collarbone. She stands inside an ancient gothic stone observatory at midnight, surrounded by open archways revealing a dark starry cosmos with a glowing celestial nebula and a crescent moon. Radiant arcane energy in swirls of magenta, electric cyan, and shimmering gold erupts from her outstretched palms, casting strong dynamic rim lighting across her face, hair, and robe folds. Her posture is empowering and focused, body tilted slightly toward the viewer with hands sculpted in precise spellcasting gestures. The composition is a centered vertical poster layout with bold graphic framing, where the floating magic circles form an ornate geometric halo behind her head. Captured with cinematic sharpness, high contrast between dark shadows and brilliant magical luminescence, 35mm lens perspective, volumetric light rays bleeding into the atmospheric haze, created in an epic digital illustration style suitable for high-end fantasy poster collectibles.