Create a 1970s dark fantasy book cover art, inspired by the Dungeons and Dragons theme, with a gritty, grainy texture. The artwork should depict a fierce gladiator locked in intense battle, his muscular body glistening with sweat under the harsh arena sunlight. His face, rugged and battle-worn, features a strong jawline, deep-set brown eyes, a slightly crooked nose, and a thick mustache with a hint of stubble—evoking the look of a hardened warrior. His long, dark, wavy hair is damp with sweat, clinging to his forehead as he grips a gladius stained with a deep red liquid. His bronzed skin is covered in scars and dirt, his leather and metal armor torn from countless fights. The background shows a massive, roaring coliseum filled with spectators, banners waving in the air, and the dusty arena floor shimmering with scattered drops of crimson fluid. The art style is reminiscent of 80s dark fantasy book covers, with rich painterly details, dramatic lighting, and a slightly surreal atmosphere, but with a modernized touch. Tenebrim
