Depict a powerful undead paladin, Elrohyr, once an Umbral elf guardian of the god of darkness, Uni. Now, as a skeletal, decayed figure, he embodies the shadow of his former legendary self. He stands tall in his dark, heavy armor, worn and tattered, with remnants of ancient elven markings. His face is a hollow skull with faint glowing eyes, and his figure radiates an ominous aura of power. He wields a massive greatsword in one hand, dark and jagged, etched with runes of darkness. Cloaked in tattered shadowy robes, he exudes the essence of a fallen hero reborn as an imposing black knight. The background is a dark, eerie battlefield, with shadows and faint mist swirling around him --sref <https://s.mj.run/9y9pnUTI1FY> --niji 6