White king leads an army toward a dark sorcerers fortress

An epic fantasy battle of the forces of the White King verses the evil forces of a mighty sorcerer. The forces of the white king are advancing on a evil looking moutain with a terrible castle rests. Above the castle is a terrible sorcerer on a floating rock directing his forces ogres and orcs against the opposing forces where a colossal battle is about to be fought. the white king is on his horst pointing his mighty sword at the sorcerer. The sorcerer is raising his lighting staff creating a giant storm above the battlefiels. The scale of the battle is done on a colossal scale. The skies are dark and ominous. Done in a fantastic fantasy and steampunk style.