Design a colossal, terrifying dragon with ultra-realistic obsidian black scales that shimmer with hints of dark emerald. Its wings are massive, torn, and laced with glowing lava veins. The dragon’s eyes burn gold, and its curved horns resemble twisted ancient tree branches. Its tail is long, spiked, ending in a blade-like tip. The body is muscular, with molten cracks beneath the scales, hinting at volcanic origins. Ultra detailed, best 8k texture, perfect mesh, sharp, deadly features.