A mystical portrait of a blue-skinned tiefling woman with elaborate cosmic horns, her demon-like features blending seamlessly with an ethereal aura. Her eyes shimmer with an otherworldly glow, reflecting the cosmic power within. The lush, curved horns, reminiscent of an ancient Oni, crown her head, adding depth to her enigmatic visage. Her expression is a captivating blend of mystery and allure, framed by flowing hair that dances with stardust. This demon anime girl is depicted in a style inspired by the dynamic and vibrant aesthetic of Arcane, with intricate patterns that weave across her skin like constellations in a night sky. The portrait captures the essence of a D&D tiefling, merging fantasy and beauty in a harmonious design.