Birthright: Book I of the Temujin Saga

Alien warmongers have cloned an ancient emperor to lead an unstoppable army. Gifted with superhuman powers and advanced technology, he sets his sights on his home planet, Earth, and then... the stars! However, countermeasures have already been set in place. A young Iowa farm boy, oblivious to his powers or destiny, is thrust into a battle that will decide the fate of humanity against the new and improved Genghis Khan!