
The true Project Mistilteinn
The real weapon is the Exaiphanes Blade
In norse mythology, "Mistilteinn" is usually a weapon crafted from mistletoe used to kill invincible gods which makes sense given that Project Mistilteinn's purpose is to create a weapon that can compete with The Heavenly Principles. In the archon quests, we are led to believe that this weapon is still in the making, is the very anti-celestia technology that Ronova tried to stop from being completed. Then there is the weapon or power Peirro uses against her with great success- which instead was created with help from The Wise and the delusion experiments run on Arlechinno due to her connection to the Crimson Moon. That's all cool and everything, but there's still another weapon to consider that we have yet to understand the purpose of:
The Exaiphanes Blade*.* Before we even meet The Tsarista and agree to work with her and The Fatui, her statues have already been prepared to "gift us" something to use that not only comes with the power of cryo, but also this weapon. We have seen how The Tsarista plans in advance, and many of us reasonably assume that she had always had The Traveler as part of her goals, possibly explaining why she is friendly to us despite that given past events we should be enemies. I don't think it is much of a jump to think that she figured The Traveler would try to connect with her statues because she has been aware of our actions across Teyvat.
Why would she want to guarantee The Traveler's help? Well, the whole issue she has been trying to overcome is that she does not have the authority or power to really fight The Heavenly Principles. Even though she has 6 out of 7 gnoses and can pull of a feat like slowing down time without even The Shade of Life knowing, Gold still tells her even against Ronova this amount of strength would only give her "a snowball's chance in hell." In that battle, it is ultimately still Celesita that is really able to cripple Ronova by taking her authority for breaking the rules. Suffice to say, it is likely that things end up where still only someone with a title of Descender could have a chance against the HP.
Let's look at another few things about the sword:
- The blade is described as "A longsword that once shone with the light of the very stars. In the voyager's hand, it becomes a brand-new light that has nothing to do with any past era."
- The Voyager's soul was once on Teyvat, inhabiting a human who could have wielded and left behind the sword purposely because they have the ability to see the future, and they have showed care in preventing Teyvat's destruction multiple times, so.
- In a similar vein, the sinner The Visionary can also see the future, and what they told The Wise of it was why they summoned our sibling to Teyvat in the first place.
- The Voyager's soul was once on Teyvat, inhabiting a human who could have wielded and left behind the sword purposely because they have the ability to see the future, and they have showed care in preventing Teyvat's destruction multiple times, so.
- In the descriptions given as you upgrade the sword, it is clear that this sword is rightfully meant for The Traveler. It tells their story. Again, hinting at The Voyager's foresight and watching of the universe having been at play.
Yes, I am suggesting that The Tsarista knows the weapon once belonged to/was created by The Voyager and all of that information and about her powers. How? Well...
- The Tsarista knew and talked with The Belyi Tsar before she took his archon seat, and he was there when The Voyager(aka Anacharsis/Seutervoinen) became partners with Koitar, which ended up being the demise of Hyperborea and the angels.
Um, so basically, what if he told The Tsarista everything or she just figured it out and found the sword? There are still two tiers upgrades to the blade we have yet to unlock in the future, and we have yet to ask The Tsarista about it in general in game, so perhaps these details will be explained. This is just my guess as to what will be revealed.
Ronova's "parting gift" was an attack on Phanes
Also in norse mythology,"Eitr" usually refers to a primordial poisonous fluid, venom, or corrupting substance. And In Sheznayan fashion, in one popular norse story, The Creation of Ymir, Eitr was created from melting frost.
You might think "well that just further proves she did shit to the nails where the abyss is going to attack everyone from those portal looking stars in the sky." and I would like to stop you there. Her last actions were that of revenge, but let's review exactly what relevant things Ronova said:
- First, before the battle against her, there are the things Traveler says to "stall her". They call her out about being anchored down and restricted by The Heavenly Principles, saying she has never known freedom and that she is just their object. And the whole bit about how Paimon is better then her, etc.
- Ronova has nothing to say on these matters, unable to deny or argue. Even the Traveler wonders if they went too far rage baiting her.
- But she does say "I will make you hate The Heavenly Principles more than ever."
- This...would not benefit Phanes, but rather get them in more trouble- because again, The Traveler is a descender, and we know what happens when descenders get pissed at them.
- When her authority is then later taken by Celestia, Ronova says "this is pure foly...it makes no sense...they stripped it from me, just like that..."
- When we fight her after her authority is lost, the subtitle under her name is "Paralogism's Outcast"
- This implies she is no longer part of the "paralogism"(hey, wasn't that the name of Mondstadt's last archon quest?
heheheh), and has been kicked out of the shades, Celestia, etc.- A paralogism is defined as a fallacious argument. "Fallacious" then basically meaning delusional...
- This implies she is no longer part of the "paralogism"(hey, wasn't that the name of Mondstadt's last archon quest?
- In her final moments, at the Celesital nail, Ronova looks upwards to Celestia, and says "I need not despise you any longer."
- Then she pulls out "The Eitr", which she describes as once "hidden by Hyperborea in the depths of The Shadow Realm"
- Note that the things in The Shadow Realm are unreachable to The Heavens, as that is how the Belyi Tsar escaped their punishment.
- This connects back to the norse mythology term because there it is poison for primordial lifeforms, and we know that The Belyi Tsar was one such lifeform. They could have created it in case he went out of control, but also maybe to hurt Phanes because they are also considered primordial and they wanted to overthrow him too.
- Note that the things in The Shadow Realm are unreachable to The Heavens, as that is how the Belyi Tsar escaped their punishment.
- Finally, looking back up again to the light of the heavens, Ronova's last words are "...This is my parting gift."
All that to say that I think Ronova's true revenge was betraying The Heavenly Principles.
Conclusion
To conclude and cap off my overarching theory here, I will put it this way:
The Project Mistiltein that has been revealed to us and known by the Fatui has lowkey been a cover story. The purpose of the technology The Fatui have been trying to develop was only to summon Ronova, and it and Project Stuzha kept getting pushed because The Tsarsita needed to bide time until the Traveler's arrival. And in case they never did, it would also serve still as a back up plan. The true and only reason The Tsarista wants all of the gnoses is for the seal and to trick Gold to make Ronova lose her authority, but she was able to do that with 6 out of 7.
The real Project Mistiltein is now almost complete. The traveler has the weapon, and Ronova has already "been made" to apply the "mistletoe" or poison. All that is left is for the Traveler to finish enhancing the sword, which will (in my speculation) be completed by it taking the Etir laced in the celestial nails in battle against whatever abyss junk comes from the portals/gates that have been placed in the skies. Meanwhile, the technology of the Fatui, including that of Mitya's project and Peirro's ultimate delusion creation, will just be valuable bonus assets in destroying the celestial nails for good in order to save everyone from this whole, uh, side effect of The Tsarista's master plan here.
Then she will want to find the pyro gnosis in the leylines somehow, and open that seal her husband left behind, where she must be hoping for an answer in how to get the traveler to Phanes so we can kill them in their sleep. Or maybe by then they will be waking up. For extra pressure I imagine it would be a race of time to get there before they fully awake. But, as the prepared woman I think she is, she will have all the gnoses as an extra bargaining chip in case they do wake up and we must face them head on.
So the ultimate lie in these recent patches I think has been that The Tsarsita aims to be the one to end Phanes, all to ensure The Traveler is manipulated to do it in her stead because she knows how hard it would be for her to compete with Phanes herself despite how much it seems she is trying to become more powerful for that purpose. And everything is going according to her plans so far. It's possible she even knew Paimon would be targeted by Ronova because Peirro told her about her, and so she used that to make sure The Traveler would want to also defeat Ronova with them.
All just theoretical. I'm done now I think. Feel free to voice your own thoughts.