Create a highly detailed full-body 3D model of an ancient high-fantasy voidlord boss inspired by World of Warcraft and Dungeons & Dragons. A towering ethereal entity with a skeletal frame encased in jagged obsidian armor adorned with glowing violet runes. Wisps of shadow energy swirl around its form, with hollow glowing purple eyes and floating void crystals. Textures include cracked obsidian, glowing arcane veins, and flowing shadow mist, rendered in a neutral studio setting for a fantasy RPG.