It was believed that some time shortly after the dawn of humanity, Genghis was given great power by the Vishanti. In return for this power, Genghis agreed to summon together the greatest mystics in the world for a tournament to discover the Sorcerer Supreme. It could not be proved he received his power in this way, as no one had memory of that time and Genghis himself had long since lost his mind. His mind cleared for one day every century to allow him to preside over a new contest. It is in this way that Doctor Strange became the Sorcerer Supreme.