The Celestial Steed is a majestic, otherworldly mount with a sleek, muscular build resembling that of a celestial being. Its body is adorned with intricate, glowing runes that pulse with a soft, ethereal light, suggesting a divine origin. The steed's mane and tail appear to be made of swirling cosmic energy, shimmering in shades of deep blue and silver, while its hooves leave faint, glowing trails reminiscent of stardust. The overall design combines organic curves with subtle angular patterns, creating a harmonious blend of elegance and power.