3D Model: A Majestic Celestial Pegasus, Pure White Coat, Flowing Silky White Mane And Tail, Single Large Spiraled Golden Horn On Forehead, Large Elegant Feathered Wings Spread Wide, Surrounded By Shimmering Iridescent Rainbow Aura Particle Effects, High Fantasy Style, Highly Detailed, Clean 3D Model, Smooth Topology, Soft Lighting, Volumetric Atmosphere, Pixar Animation Style, Unreal Engine 5 Render Quality.