A towering knight clad in dark, jagged armor, forged from cursed steel, etched with ancient runes glowing faintly with an eerie red hue. His helmet is adorned with twisted horns, shadowing his burning crimson eyes beneath. The knight wields a colossal, serrated greatsword pulsing with dark magic, its blade trailing wisps of spectral energy. His tattered cape billows behind him, whispering with the voices of the fallen, while his heavy boots crack the ground with each step. The battlefield is a ruined wasteland, littered with shattered banners, broken weapons, and mist that coils around his figure like living tendrils. A foreboding castle looms in the distant haze, shrouded in thunderclouds, as lightning illuminates his menacing silhouette.