The Fatebreaker, or Ezyrim Inok, as he was once called, was a child gifted (or cursed) with the power to see the future and fate of any person he could see. This ability dated back all the way to the Celestial War, when the Ancient God of Fate was killed by the Forgotten One, unlike other Ancient Gods, their death was not complete (like the Ancient God of Gehsb), but it wasn't superficial, like the Ancient God of Honor. Instead, they were reduced to merely a shade of their former self, drifting across the aether mindlessly as eons passed them by. Eventually it gained enough thought for it to do something, and that thing was to attach itself to a mortal host. It hurtled towards the closest possible compatible mortal it could, Ezyrim Inok, or as he is now known today, the Fatebreaker.
Ezyrim was pretty average, working as a farmhand in his town. He had a family, maybe a few friends, but didn't interact that much with people he didn't know. Even with others he trusted, he was pretty silent. This isolation and silence would only worsen with his acquisition of the ability.
When Fate attached itself to this unassuming child, nothing much changed at first. Slowly, over the course of weaks, there were changes. Sometimes Ezyrim would spy glimpses of people's futures, just enough for him to wave it away as some passing thought in his mind. But eventually, the full ability of Oracle implanted itself into his consciousness and was never the same. Ezyrim, a 13 year old at the time, could literally see the unavoidable future of every single being with a smart enough mind or soul, and the ability nearly drove him mad at first.
No one believed him when he told others, so he stayed silent, observing others and keeping to himself, learning more about the ability. He learned that he could influence the route the future took by interacting with others. He could tell them to avoid a certain task they were going to do and the future would change accordingly. Yet when other people talked and interacted with each other, the future stayed the same. He was outside of the purvey of fate, able to interact with it and change it without being affected by it, and Ezyrim wasn't the only one who was.
The Ancient Gods, in the Swathe were able to see and interact with fate, if only by telling their Emissaries of the future. When Ezyrim found out about this, he was mad, blaming the gods for their role in his curse of an ability, and started looking for ways to get back at them by messing with fate. He began to experiment, only telling people small things at first, like what the weather was going to be, or what the local merchants were going to sell tomorrow. Then, it started escalating, telling people major things about their future, like whether or not they were going to break a limb or injure themselves, things like that. Eventually, it escalated all the way into actively saving lives by removing deadly obstacles, or warning people not to do something that would lead to their deaths. With each intervention, each foretelling of the future, Ezyrim felt fate fray little by little, slowly wearing away at it's integrity. But it would repair itself slowly, and the things he did were little more than nicks on the string of fate. Ezyrim no longer looked at people like people, more so objects or tools to continually wear away at fate. So, he decided to do the best thing he could think of, the best way to use the tools at his disposal to damage fate. He murdered someone.
It was sloppy, more a spur of the moment decision rather than something that was meticulously planned out, a coming theme in his later rampages. He was immediately found out just minutes after the murder, and drove out of town with whatever pointy objects people had on hand, forced to flee into The Urysas to avoid justice from the local magistrate's bailiffs. In the harsh conditions of the freezing mountain range, Ezyrim only survived off of his ability, using it to find small animals that lived in the wastes (usually eating them alive and raw), avoid Ronrifs and to find places to hunker down for the night. In the peaks of the Urysas mountains, Ezyrim was reforged into the Fatebreaker, bit by bit, piece by piece, consuming chunks of what little sanity he had left, until all he had left, was his shattered mind, his cursed ability, and the deep resentment and hatred for the gods. The final piece of the Fatebreaker snapped into place, when he managed to find a broken down Giant facility, in which he found the Ascended Adamantium Armor and Adamantium War Axe that he is so known for in tavern tales and bedtime stories. Ezyrim was no more, in his stead rose the murderous and insane Fatebreaker.
One day, he came down from the Urysas, and began his reign of terror over The Alammar Empire. He slaughtered entire hamlets in a night, crusaded around the countryside killing anyone he came across without mercy. It was his formative days, in which he learned how powerful he could be, and how powerless others are. Eventually, he either mellows out or became even more insane. Whenever he interacted with someone, two outcomes were likely. He would either help you out, or kill you. It wasn't even luck based, because with his ability to see the future, luck lost all meaning. Troops were sent after him of course, but he either perfectly avoided them, or killed all of them in one go. In one instance, he fought a detachment of one hundred soldiers, and killed them all without being hit once. Undoubtedly, one of the most influential things that the Fatebreaker did was to go back to his former village. He, of course, slaughtered them all, but came across something. Aurland, as a child. The Fatebreaker, of course, killed him without a third thought, possibly setting Aurland down his whole path and causing everything that happened later.
The Fatebreaker is currently the most powerful person on Tylien, tied with Aurland, and that isn't because everyone else is weak, he's just that powerful. He's very agile, very strong, and very, very durable. You could punch him halfway across the world, through three cities, a mountain range, and a volcano, and when his body would finally stop, he would immediately get up and applaud your for such a blow. His war axe is adamantium, so all your armor is useless. The Fatebreaker doesn't really have a fighting style, but it doesn't really matter because he can know what you're going to do before you do it, and then perfectly counter it, then kill you within a second. He pried the secret to immortality from a Necromancer Lord, then killed them with ease.
The (current) highlight of his entire career was when he fought the Godseer, the most powerful person in Tylien back in the ending days of the Alammar Empire. The Godseer was an Emissary, who was compatible with all the Ancient Gods, meaning that every single Ancient God was constantly talking in his head at all different times of the day, which both gave him an extreme amount of knowledge, and also drove him to insanity. The Godseer was schizophrenic, a very powerful and respected schizophrenic who couldn't tell whether or not the voices in his head were the gods or his own delusions. The Fatebreaker had frayed the string of fate to such a point that it was extremely close to breaking, and the gods were panicking over what would happen if fate were to break. The Fatebreaker decided to finish off fate with one last extravaganza, a big bang to close off his life's goal.
The Fatebreaker broke into the temple where the Godseer stayed, slaughtered the attendants, and when finally matched face to face with the Godseer, engaged in battle. The fight lasted seven days and six nights, decimating the surrounding area. Maps were reshaped, rivers changed their flow, entire forests disappeared overnight, the soil was scarred in marks of fire, ice, lightning, and cuts from an axe. It finally ended when the Fatebreaker unleashed their ability, the one built out of hatred, the one made to scorn the gods themselves, the one that makes him so powerful, Potestas Contaminans. Potestas Contaminans' effect is to even the playing ground, to equalize people. It's effect is to, for 30 minutes, in a hundred mile radius around the Fatebreaker, to entirely stop any magic. Mages can't cast spells, enchanted weapons are just regular weapons, magical constructs are disabled. And the thing is, the Fatebreaker can spam this ability. The ability to cast Potestas Contaminans, like Caelestis Potentiae, relies on the caster's concentration and ability to pull power from a source, both of which the Fatebreaker has endless amounts of. With this ability, the Godseer's powers were reduced to nothing, and he was killed by the Fatebreaker with criminal ease, completely destroying fate.
After that, the Fatebreaker went through a bit of a midlife crisis. He had long since gotten over his hatred of the gods, and just killed because he had nothing better to do. He mindlessly slaughtered an entire bloodline for no reason, but that brought him no joy. Eventually, his mind was decided. The Splintering had passed, and the Alammar Empire had fallen, with a new force arising in the north. And so, he sought them out, so they could freeze him for about 700 years. They did that, and deposited him deep within the Urysas, yet to be found by anyone.