Ultra-realistic illustration of a fierce black and gray dragon flying through stormy skies, inspired by the dragons from the Harry Potter universe. The dragon has rugged, reptilian scales with a matte texture, powerful wings with visible membranes and veins, and sharp, curved horns. Its glowing yellow eyes are intense and predatory, full of ancient magic. The dragon’s muscular body is detailed with scars and battle marks, and its sharp claws and teeth add to its menacing presence. The atmosphere is dark and magical, with swirling storm clouds and flashes of lightning that highlight the dragon’s form. Highly detailed, dramatic lighting, capturing both fantasy and realism.