Time goes by

Doctor strange, or Stephen strange had to go on a mission, he wanted more information on that time usage, this power it took forever for him to master. The Ancient One told him, if he wanted to find more, he would have to go through the time through the infinite loop, where this guy, same age, maybe a year younger named, Altair Cassius, someone who was victim to the time loop, the one who had his power, and fell to this loop. And they replaced him. Altair had his own eye, like how Strange has his Eye of Agamotto. They go on a mission later, working together, and end up falling in love slowly, defeating Dormammu when he decided he wanted to take over the world again.