3D rig of a dark sorcerer with arcane tattoos and glowing eyes. The character should have flowing robes adorned with mystical symbols and carry a twisted, ancient staff. The rig should include fully articulated limbs, a flexible spine, and detailed facial expressions that convey a sense of power and malevolence. The textures should highlight the eerie glow of the tattoos and the dark, worn fabric of the robes. The character should be in an A pose.