Dark age of Technology warmachine, model "warmind", that was corrupted by a shard of a warp-corrupted C'tan. I am thinking of a vaguely humanoid cross between a Skorpekh destroyer and UR-025, except that most of its body is ornate, intricately designed necrodermis adorned with an eight-pointed star emblem in the style of the Necrons. The armor is etched throughout with glowing purple necron runes. Instead of a traditional head, it has a helmet resembling Pharoah's burial mask, with cables and wires sprouting from it like tentacles. Armed with a power sword and lightning claw, its back plate features a series of mechanical tendrils that emerge from the armor, resembling a twisted, organic mass. Epic anime style. Buring Hive City in the background. Masterpiece.