Dreamwa1ker

Fair enough, this is a good point. So a different thing is missing. It is pretty much stated that Rysn can't currently use the Dawnshard in her current state: "“Fortunately, you would not be able to employ it,” Nikli said. “It is beyond your capacity." But it is also implied that she could if she formed a spren bond (hence the stipulation in the agreement). If it is not really Investiture that she lacks, but rather something else the bond would give her, perhaps it is more about divinity for lack of a better word. From Nikli's explanation: " “All their greatest applications require Intent and a Command. Demands on a level no person could ever manage alone. To make such Commands, one must have the reasoning—the breadth of understanding—of a deity." Perhaps the spren bond would make you capable of using the Dawnshard because spren are Splinters, little pieces of divinity. Therefore I think specifically the Divine Breath of a Returned like Vasher (not just normal breaths) could allow true usage of the Dawnshard as Endowment has given you a little piece of her divinity. Whether this means Rysn would have to somehow give Vasher the Dawnshard and have him use it, or use it together somehow (as it's also said you couldn't use it "alone" implying you may be able to buddy up) or if giving up his breath he could give her momentary capacity to wield it is unclear - she wouldn't be able to keep the Divine Breath as it doesn't seem to work that way.

Ok I hadn't found this one posted when I did a quick search but please excuse if it's already been theorized. Spoilers for Warbreaker ahead.... In Dawnshard, part of the deal Rysn makes at the end with the Sleepless is "You must never bond a spren to become a Radiant." This is presumably because if she became Radiant, she would have access to stormlight - easy access to Investiture might let her be able to use the ability of the Dawnshard (you need Investiture to fuel magic, while the Dawnshard is the Command). At the same time, the description by Nikli of usage of the Dawnshard sounds really similar to Awakening on Nalthis with needing an Intent, a Command, and Breath (Investiture). This reminded me that even if Rysn doesn't have easy access to Investiture as a Radiant, there is someone currently on Roshar who is heavily Invested with Breaths (including a Divine Breath as a Returned) - Vasher. The Returned often have a special task that is their purpose for being brought back by Endowment. They will find this purpose and give up their Divine Breath to fulfill it (as Lightsong did in Warbreaker). Vasher is still around so presumably his time may not have come yet. Theory: There will come a time where the Dawnshard needs to be used to save the world, maybe to Change the Oathpact or to Change the nature of the Fused or Singers. In a critical moment, Vasher will realize this is his purpose and give up his Breaths + Divine Breath to Rysn so she can carry out this critical act. Thoughts? Obviously still an undeveloped theory. Would Vasher himself have to provide the Intent/guide the power since as a Returned he maybe has a bit more the mind/capacity of a divinity?

And now this week... Yes called it! Fabrial computers. GET HYPE.

Yu-Gi-Oh!

I am thinking on the lines of two possibilities: Option 1: The Sleepless. I think this one most likely. They seemed to want to protect what they have in Aimia (including apparently a large cache of soulcasters) - perhaps to prevent them being used. The Sleepless always seemed like spren themselves with the way they are sort of just possessing a bunch of cremlings. Theory: Could it be that the soulcasters spren Navani observed are "the Sleeping ones" vs the Aimians are "the Sleepless" - they are the same just not captured and therefore still conscious, hence the Aimians hoarding soulcasters to protect their kin. Similarly, could the Aimians be aware of what happened with Ashyn and are trying to warn Navani not to create these spiritual realm fabrials as that would have similar disastrous effects? Option 2: Cultivation herself. We know in Mistborn so I think Cultivation should be able to somehow manipulate a gem directly to write or to alter text from spanreed. Some spren call her Mother, she may really view them as her children and therefore be against Fabrials. Additionally she may not trust Honorspren now that Honor himself is not around and think they are misguided. She doesn't generally act this openly but does in exceptional world-changing cases (e.g. Dalinar) and maybe she saw something with her future-sight that indicated some pruning may be needed here. Again she would be aware of what happened on Ashyn and could be trying to avoid the same happening on Roshar.

Changing the polarity of the fabrial eh? Anyone else think transistors? STORMLIGHT COMPUTERS!!! *squee* Space era Cosmere will be a thing of beauty.

I think Rysn won't be a Radiant but rather will be something like a dragon rider in the back half of series. Her Larkin is growing quickly after eating stormlight in Oathbringer...

What if she soulcast a person when she was a child (on accident) ... that would be pretty horrifying. Though I could see biggest point against this would be wouldn't she trigger harder off of Jasnah soulcasting those muggers in WoK. I'll have to read that section again. Regarding final oath I like the idea you put forth, I was thinking if it's a childhood accident for number 4, number 5 might be: "I forgive myself" or "it's ok to forgive myself" as the repressing of the memories for her earlier truths seems to be tied up with a sense of guilt not just pain.