A majestic blue dragon, glowing with a metallic sheen, coils within a cavern of contrasting blues and grays.
A detailed digital illustration of a majestic blue dragon, its metallic scales reflecting a mysterious inner light, nestled in a cavernous lair. The central dragon's glowing eye, a beacon of intensity, contrasts the dark, rocky walls. This majestic creature is the sole focus, an enigmatic guardian.