A full character turnaround sheet of a shadowy crystalline stag knight, ethereal cervine creature formed from obsidian glass and swirling midnight mist, intricate fracture patterns glowing with soft violet luminescence across its antlers and chest, floating tattered cloak of shadow silk trailing behind, massive crystalline bow of frozen starlight gripped in elegant hooved hands, floating shadow particles creating ethereal trail, dramatic moonbeam backlighting creating prismatic edge glow, deep violet obsidian midnight blue and ethereal silver color palette, Painterly digital art style, concept art for video game, front and back view with weapon details