No one has ever seen, what does that dragon eat in the lifeless desert, but there is theory, that he is powered by sunlight. Hard scales protects dragon against the adverse conditions of the desert, but eventually the strong wind and sand tore his wings and body cracks. Because of this dragon creates a copper armor that supports the body.
Surial dragon is not enemy for humans, but to protect himself he uses sunlight power, concentrating it using horns and creating a strong beam.