Warning: SPOILERS ahead forOnyx Stormby Rebecca Yarros.Onyx Stormsets Berwyn up to be a major villain inthe nextEmpyrean Seriesbook, and the best fan theory about him will lead to a wild confrontation between Violet and the venin Sage. DespiteIron Flame’s endingestablishing Berwyn as a problem, he takes a backseat to thesilver-haired venin, Theophanie, for most ofOnyx Storm.Onyx Storm’s endingpromises we’ll see more of him though, as it reveals the repercussions of his and Xaden’s connection — and implies that Xaden will be joining him and the other venin in the next book.
With Theophanie seemingly out of the way, it’s likely Berwyn will take on a much larger role inOnyx Storm’s sequel. He may even beThe Empyrean Series’Big Bad, particularly if one convincing theory about him proves true. Thus far,Fourth Wing’s sequels have primarily focused on Xaden’s interactions with the venin Sage (who reveals he’s actually a general at the end ofIron Flame). However,Onyx Stormlays the groundwork for Berwyn and Violet to face each other in future books. And one popular theory makes that prospect so interesting.

Onyx Storm Theory Reveals That Berwyn Is The Venin Balance Of Violet’s Second Signet
Berwyn Is Likely The Empyrean Series' Venin Dream-Walker
AmongOnyx Storm’s new revelations about the veninis the fact thatthe more powerful ones are able to have signets — and that nature maintains a balanceby giving them the same abilities as the strongest dragon riders. Violet spends much of the sequel believing that Theophanie is the venin equivalent to her lightning signet. However, she later learns that Theophanie is actually a storm-wielder, and thus, her mother’s equal. It’s unclear if there is a venin who controls lightning alone, but one theory posits that Berwyn will be the venin equivalent ofViolet’s second signet.
5 Great Onyx Storm Theories About How Violet’s Second Signet Will Be Used In The Next Empyrean Series Book
Onyx Storm finally reveals Violet’s second signet, and there are some great theories about how she can use it in the next Empyrean Series book.
Violet discovers her power from Andarna inOnyx Stormis dream-walking, an Inntinnsic ability that could make her significantly more dangerous.The Empyrean Seriesbookshave barely scratched the surface of what Violet can do with this signet, but they have shown us another character who can seemingly step into people’s dreams. Berwyn haunts Xaden’s nightmares throughoutIron FlameandOnyx Storm,and he manipulates Violet and Xaden through his dreams. Given this,it’s possible Berwyn is the venin dream-walker, meaning Violet will have to face him one day.

Iron Flame Hints That Berwyn Is A Dream-Walker (& Shows How Powerful Violet Can Be)
Violet Might Be Able To Manipulate Other People & Outcomes Like The Venin Sage
Iron Flameoffers evidence that Berwyn is another dream-walker, and if this theory proves true, it gives readers an idea of how powerful Violet can be. Violet believes the venin Sage is appearing in her dreams throughoutIron Flame,butOnyx Stormreveals otherwise. Berwyn is frequenting Xaden’s nightmares, and Violet is only present because she’s a dream-walker. Even so, it’s clear the venin is targeting Xaden inIron Flame,andhe even uses Xaden’s dreams to influence his choices later in the book. As Violet can’t pull someone into another person’s dreams, it seems this is all Berwyn’s doing.
If Berwyn is any indication of what she’s capable of, she’ll be a force to be reckoned with when using Andarna’s power.

One could say that Berwyn uses dream-walking to manipulate Xaden into turning venin, highlighting the strength and scope of such a power. Someone with this signet could likely plant ideas in another person’s mind without them realizing it, and they could use it to push certain outcomes. Violet might be able to do all this afterOnyx Storm, but she’ll need to master her second signet before she reaches her full potential. If Berwyn is any indication of what she’s capable of, she’ll be a force to be reckoned with when she masters Andarna’s power.
This Onyx Storm Theory Sets Up A Wild Showdown Between Violet & The Sage
They May End Up Facing One Another In Dreams
If Violet and Berwyn both turn out to be dream-walkers,Onyx Stormhas set the stage for a truly bonkers confrontation between these charactersin a futureFourth Wingsequel. If they’re both capable of entering other people’s dreams, it seems probable that their inevitable showdown will take place within the dream realm. This raises fascinating possibilities, as it could see them hopping from one character’s mind to another’s or even manipulating their environment as they fight each other.
There’s no confirmed timeline for the nextEmpyrean Seriesbook, but Rebecca Yarros is taking a break afterOnyx Storm.

The Empyrean Seriesneeds to reveal more about Violet’s second signet before we know what she can do with it, but a one-on-one fight between her and the Sage is bound to be exciting. And if it does happen in the dream realm, it will raise the stakes significantly. It’s unlikely that Violet’s friends or dragons will be able to help her there, so it would truly be a battle of the minds between her and the Sage. Hopefully,Onyx Storm’s sequel delivers on the potential of such a showdown, as it could be one of the series' best yet.