A full character turnaround sheet of a void weaver archmage, ethereal cosmic sorcerer from the space between stars, cloaked in shifting nebula fabric that ripples with captured galaxy light, pale silver skin etched with glowing constellation tattoos that map unknown celestial realms, holding a massive astrolabe staff with rotating celestial orbs and captured comet shards, floating disc of ancient brass star charts orbiting around, dramatic cosmic backlighting with swirling aurora galaxies and distant supernova bursts, deep cosmic purple void black silver white starlight blue nebula pink and comet gold color palette, Painterly digital art style, concept art for video game, front and back view with magical constellation details