I've put together some thoughts on the lore regarding radianite and what happened to Omen. Do I think this is what Riot was going for? No. This is simply something that connects all the dots, but we could connect these same dots in a completely different way. And every time someone gives their own explanation to the lore, a lot of what we think would be cool plays a part. In the end, only Riot can give the full story.

In any case, this is taking in consideration every line, card, map and stuff devs have commented, so there might be info about the lore you didn't know about.

I think Riot played a lot with quantum mechanics while thinking about Omen and the radianite generally.

There’s a card called “Radianite danger” which shows a representation of a wormhole and a Feynman diagram right below. So we know for a fact that wormholes are a thing in this universe. Radianite is likely the cause of these wormholes.

The difference of a wormhole and a black hole is that the wormhole doesn’t collapse at the center. It keeps itself open for long enough for something to pass through. In theory, it could lead to another point in space or time (or both) or maybe another dimension. We don’t know what’s the case with the Valorant reality, since we have evidence of time travel and the existence of multiple universes. Viper even says that Yoru chooses to stay in this universe when there are many better ones out there.

Regardless, when it comes to physics, in order to stabilize a wormhole so it won’t collapse into a black hole, you need opposite forces. Think it like a magnet repulsing another magnet that is trying to hit the ground because of gravity. In the case of wormholes, the idea is that you need something with negative mass and energy to repel the huge mass of a black hole. It’s what they call an exotic matter.

Only one experiment has shown something like a similar effect of what negative mass could have. This experiment is explained by Feynman's diagram (and a bunch of other stuff, Physics people don’t kill me, I’m a biologist).

So maybe that’s what Radianite is: exotic matter. Something with weird properties that can stabilize wormholes. More importantly, exotic matter doesn’t exist, so you can play around it the way you want.

In fact, during the tutorial, Brimstone says that the spike is how they steal their radianite. It was theorized that the spike transports the radianite somewhere else.I don’t believe it.

In Bind, in the lab, there’s a sign saying “refinery”. I think the radianite exists in two states, one that is the green-blue bright thing we see, and one that is black - the crystal. You must refine one into the other to use the energy. And one steals energy from the other. I’m going even further here to say that this transport of energy is 100% efficient, and that’s why the Radianite is such a huge deal that made Kingdom so powerful. The entropy never goes up. It remains always low. Like if it was always going back in time. But that’s my head going too far (like I wasn’t going too far before lol).

But one type of radianite stealing energy from the other is important because I think this is what the spike is. They put it down and it slowly opens so the radianite can suck the energy from all the radianite that is on site, leaving only depleted radianite. Which is why nothing gets destroyed in the process, only radiant and radianite users. Their energy is also sucked.

And I think that the depleted radianite is dangerous, because now it can also absorb radianite and it’s energy is super negative, which, as I’ve said, can cause wormholes.

Considering the existence of mirror universes (as evidenced in several cards), I think the agents are not fighting the Kingdom agents. I think they are all Valorant agents from different universes fighting each other for radianite because Kingdom has been using the Radianite energy, leaving depleted dangerous radianite behind, causing several problems in the fabric of reality. The universe that has less Radianite energy will be destroyed. So they keep fighting over it. They try to prevent them from stealing theirs and try to go to their universe to steal radianite from there.

Now, Omen.

I believe there’s no Omen from a mirror universe. He’s the only agent that, when meeting an enemy Omen, is the same guy. He exists in every universe, and it’s all himself, it’s all part of one original Omen.

But that’s too far ahead. Let’s go back in time. Let’s put together what we know.

• Viper knew Omen before he became what he is.
• Viper knew Brimstone and Killjoy as well, and Brimstone knew Killjoy, but Omen didn’t know Brim or Killjoy. They don’t seem to know Omen as well. This might mean they really didn’t meet the person he was, or they don’t know that the person he was became Omen.
• Omen doesn’t call Viper by her code name not even once. Only Sabine.
• He doesn’t know his own name. Viper lets it slip, but corrects herself before he can comprehend what she said. So he can’t know his name.
• He knows Viper keeps secrets. He says “don’t die here, I need your secrets”.
• Sova has a line saying they’ll find what he’s looking for, so he won’t be this way forever, which means that it’s possible to revert what happened to Omen.
• He can feel some sort of balance in the fabric of reality, which is disrupted by Sage.
• He’s constantly being torned apart. He mentions that people don’t know the meaning of “split”, that he must keep himself together, wonders how many times he’s died, that there are things worse than death.
• He struggles not only with his body integrity, but also with his memory. Memory seems to be a huge deal for him. When no one caught the spike, he says “can’t even remember the spike?”.
• He says “how many must I kill before I’m restored” and “I feel like myself. Catch them again”. He also says “I will kill that Omen, I’ll take his memories, I’ll remember”. So apparently Omen is fighting to turn back into a human and killing helps him in the process.
• Viper is pissed at Sage for failing her in the past. Omen has a card where Sage seems to be trying to revive a broken Omen.

So putting all this together.

I think Omen was destroyed when there was an accident while working for Kingdom. The same accident also made Viper vengeful like she is now. I think his body was disintegrated to the atomic level, like if he had been sucked by a black hole. But it wasn’t a black hole. Radianite was involved in this. So somehow, despite being reduced to atomic particles, Omen was able to go against these forces and come back as this ghost-like figure, which is like that because it’s not all of him. There’s little of him. The rest of his particles are scattered around many universes, forming other Omens. Sage tried to revive him, but failed, because she couldn’t lower the entropy, she couldn’t put him back in place, because parts of him are stuck in other universes.

When he ults, he actually ceases to exist in that point of space-time and regroups his atoms somewhere else.

Memory is very important to him, because that’s how he’d know he’s ready to be revived. He says he needs to feel like himself. His memory is split between all the atoms of himself, in every universe where there’s a version of him. The only way to know that all his atoms are now within one of himself so that Sage can try again, is through memory. If he remembers who he is, that means he’s whole. That’s why Viper doesn’t tell him anything, that’s why she keeps so many secrets. If she tells him anything, he won’t know when he gathers that memory back, because the information is already there.

So Omen does remember Sabine, he remembers details about her, but doesn’t know his own name, simply because that’s the memory that he got to keep with the particles that form him at the moment.

When Sage asks Viper if she “thought about her offer” and Viper answers (quite angry) “don’t even think you can help me. You can’t help me. You can’t help them”, I believe “them” refers only to Omen, because Omen is, at the moment, many. I don’t know what offer she made, but considering how angry Viper was, seems like a half-win. Like she could bring him back at some cost or anything of the sort, but that is out of question for Viper.

I think Sabine and Frederick were in love, and the reason why Viper is so hateful today is partially because of what happened to Omen. She now has to live with the secret of who they were and watch him remember it slowly, without being able to tell him the truth. There’s also the chance that he’ll never be human again, so that adds to her hatred. And I mean really “partially because of that”, because I think the same accident also did something to her and that’s the main reason why she wants revenge.

People hate when I say this, but I do like to think that Sabine got some healing abilities and became a radiant and the accident stole this power from her.

Well, that's it, and yes, I'm aware I went too far with the quantum mechanics thing.