Ghost Mechanical Robotic Entity

dark biomechanical entity made of black steel and obsidian; glowing blue and cyan energy veins running through cracks and gears; molten core emitting light under the chest; metallic surface with reflections, heat discoloration and deep engravings; energy pulses moving through mechanical tendrils; realistic high detail lighting, cinematic contrast, dark background atmosphere, mysterious aura, high resolution texture, epic picture