An epic scene painted in a classical art style, featuring a heroic warrior in bronze armor facing a fearsome multi-headed Hydra within an ancient stone arena. The hero, wielding a gleaming sword and a round shield, stands bravely at the center, poised for battle. The Hydra's serpentine necks are coiled and ready to strike, each head baring razor-sharp fangs. The arena is filled with an audience of ancient spectators, their faces captured in expressions of awe and fear. The dramatic lighting highlights the hero's muscular form and the intricate scales of the Hydra, creating a sense of tension and grandeur.