You know what lets make an entire theory about science, and there's no one better to start with than Nozdormu. Why Nozdormu? Because his powers does not make sense using magic, really if his time travel was powered by magic then how come the job can't be done by Malygos? Malygos has connected all the magical ley-lines to his home and is quite indisputably the most clever of all the Aspects, a fact he takes great pride in. So why is Nozdormu there at all? The only logical conclusion is that Nozdormu isn't actually using magic to power his time travel, which leaves us with only one solution known to man, physics. Knowing that lets cross the simplest thing of the list, faster than light travel, it is a very commonly held theory in physics that were you to travel faster than the speed of light you will travel back in time. We can be fairly certain that this is actually the case because while we have never observed anything travelling faster than the speed of light we have observed neutrinos who travel at the speed of light and are stationary in time. But we can rule out Nozdormu and the other bronze dragons travelling faster than the speed of light because they have never been shown to think and act at the speed of light meaning that if they actually flew faster than the speed of light they would not be able to react in time and just fly into the nearest mountain and die from the impact. Well that's if you can even travel faster than the speed of light to begin with, you see the energy required for any particle to travel faster than the speed of light is infinite. Alright so what we're left with is that Nozdormu and his kin needs to be able to travel in time without reaching absurd speeds, thankfully we have Kurt Gödel here to explain that for us. You see if you were to, oh I don't know create a Black Hole and force said body to spin around itself at a ludicrous speed then you could essentially create a wormhole in space-time that would allow you to travel back in time to the same location. Super so all Nozdormu needs to be capable of is to be the master of Black Holes, no biggie. The only problem is, if a black was placed anywhere on Azeroth even for just a split second the entire planet would be swallowed up which is rather bad for anyone trapped inside. You see the gravitational force of a Black Hole is so strong not even light can escape from it. Light travels 1,1 Billion kilometres or roughly 900 million miles per hour and still it is too slow to escape a black hole. Alright we can do this all we need to assume is that Nzodormu and his brood are able create enough force to counter the gravitational force of a Black Hole. Lets just bring out the calculator and input the gravitational force of a Black Hole, which is... infinite... You thought Nozdormu was confusing trying to imagine him travelling at the speed of light, oh we're not nearly, nearly done yet. You see in order to prevent the Black Hole from doing any harm the bronze dragonflight needs to be able to counter an infinite force... Odds are this makes no sense to you because you're a human, trust me it makes no sense to me either, but we evolved on the plains of Africa with the very limited grasp that evolution had given us and we can't understand forces that we can't see either because they are too small or too large for us to see them in their entirety. This fact was summarized perfectly by Neil DeGrasse Tyson "the world is under no obligation to make sense to us." But yes, a Black Hole has an infinite gravitational pull because they're created in rather extraordinary ways. A Black Hole is formed whenever atoms are compressed too tightly together. Just to give you a grasp on how tightly they need to be pushed together we'll visit a neutron star which is one of the heaviest objects in the world. A neutron star has a diameter of roughly 20 km or 12,5 miles, not that huge right. But what it lacks in size it makes up for in weight, if you were to take a teaspoon of a neutrino star, that teaspoon would weigh more than a mountain does. In other words since these neutrino stars exist they prove that you could push your local mountains into the size of a teaspoon and it would still not be tight enough to create a black hole. So we now know what Nozdormu has to do in order to form a Black Hole and travel back in time, take something as heavy as a mountain and make it smaller than a teaspoon while still maintaining the entire weight and mass of the mountain. Then once that is done he needs to counter an infinite force attempting to swallow up his entire planet and everyone he loves. But once that is done clear sailing right, Nozdormu is now back to the same place just an earlier time, wrong. While Nozdormu is back to the same space just at a different time take a few seconds to think what that really means. Because Azeroth is a planet which rotates around its star, which in turn rotates around its galaxy, which in turn is being pulled by something called the Great Attractor that we have yet to identify. We only know that the Great Attractor is an unbelievably massive object that is pulling our galaxy the Milky Way galaxy. But also we know that the Great Attractor is moving towards some undiscovered object. Taking into account what a massive distant a planet actually covers in just a short period of time it's easy to realize that if Nozdormu travels back in time even a day or two the planet of Azeroth wouldn't be on the same location meaning that Nozdormu would most likely land in empty space. But what is also possible to happen is that Nozdormu instead lands inside an asteroid, a planet, a star or a black hole. Taking all these possibilities into account Nozdormu needs to be able to overpower an infinite gravitational pull, survive Billions of degrees above the boiling temperature of water, absolute zero degrees and being teleported into an object. After that he also needs to be able to find his way back to his planet no matter how many light years away that may be. Now Nozdormu is finally back to his location just at a different time, no wonder he seems tired of his job in Dawn of the Aspects when every time travel is essentially Gods version of mission impossible. And that is the science behind Nozdormu and his time travelling abilities as well as the reason why he may be the true God of Azeroth, although he'd kind of be a reverse God who doesn't care enough to either punish or reward mortals or for that matter doesn't even wants to be revered.