A full character turnaround sheet of a crystalline ice phoenix sentinel, ethereal avian creature composed of frozen diamond feathers and translucent ice crystal bones, intricate frost rune tattoos glowing with pale blue luminescence along razor-sharp wing edges, massive curved talons gripping a Staff of Eternal Winter with swirling snowflake crown, tail feathers trailing ribbons of shimmering aurora light, dramatic arctic aurora backlighting creating mesmerizing prismatic halo, deep arctic blue obsidian silver and phosphorescent violet color palette, Painterly digital art style, concept art for video game, front and back view with magical artifact details