Honorless

Don't see why you wouldn't be able to capture Radiant spren, might need a bigger gemstone but wouldn't have to be King's Drop size, so doable. I think the Radiant would still remain Radiant, and have access to their Shardplate if they swore the relevant Ideal but they wouldn't have access to the Shardblade

You mean the Reshi Tai-Na... hmm, depends on the size and quality, possibly? The Highstorm powers all of Roshar. And do you remember the gemstone pillar of Urithiru? I think you'd require something like that. Otherwise, maybe if you get to the Stormfather after he's passed through the continent, when he's extremely tired and weakened then you could do that... and bring about the Night of Sorrows, you monster

I think all beings that are primarily made of Investiture require Investiture for sustenance. Even the spren seemed more energetic after the Highstorm. Dunno how long Kelsier would stay alive captured in a gemstone compared to a Herald, but I think eventually he'd succumb too

Compounding is a bit different, Feruchemy is also a Metallic Art Connected to Preservation

Thank you for taking the risk, because I wouldn't have!

Presumably, just fewer quanta of Investiture in Investiture radiation compared to gaseous Investiture, it may just be more diffuse, just like liquid Investiture seems to be a more concentrated version of Investiture and solid Investiture / godmetals even more so. I don't think Navani was ever able to split the Towerlight back into Stormlight and Lifelight. She was just able to mix Stormlight and Lifelight into Towerlight together with the Sibling, just like she did Warlight together with Raboniel. Edit: oh, just realized what you meant. Navani was not able to split Towerlight back into Stormlight and Lifelight, she was only able to split the light emitted from the prism back into Stormlight and Lifelight colours. She was able to split the Investiture radiation. Here: Yeah, the WoB in question is this: And yeah, if it takes four hours of direct sunlight, it would probably take a loooooooooong time to recharge from just a bit of distant starlight

Oh and congrats and thank you for getting that Fainlife question in and not getting RAFO'd! Omg, I wonder if the Evil on Threnody being Fainlife theory might be correct! So much hype!

Okay, so the theory got confirmed: at 39:21, thank you for asking this to Brandon, @Kingsdaughter613! Honestly Punny, and a lot of the rest of you, how do you guys even notice these things?! This is amazing!

If Preservation / Harmony can just copy other Shard's Investiture, I'll eat my hat... I think. Actually, I'm not so sure anymore since I typed that. Hmm...

Shadowblazes from Rithmatist were originally Spiritual Realm creatures and of course, Shards are primarily in the Spiritual Realm. Beyond that, Brandon hasn't confirmed any other entities that are primarily in the Spiritual

Hmm... possible. Allomancy already draws power from somewhere else though, no idea how you'd put Aviar Investiture to filter via the metals. Even less of an idea of how you'd do that with Surgebinding, where presumably your bonded spren acts as the filter... or the bond with you might supercharge your Aviar. We might get that latter answer from Lift from enough.

I think with the Dawnshard comment that Brandon made, he just said Heightening-like effect, collecting Investiture of various other types or a mix would not give the same effects.

Could work, but like with Lerasium Mistborn, it would eventually dilute back

Holding Stormlight gives you a buzz so expending it can make you feel a bit tired. It shouldn't affect combat performance too much. Healing is healing and Stormlight healing is much less costly than Feruchemical healing, Compounding is better but you still have to store a bit.

Blood itself isn't necessary to create a Hemalurgic charge, I don't think iirc, it "just so happened" that Hemalurgic bind points almost always coincided with major arteries and veins (not that that's a problem for the recipient, Hemalurgy literally reshapes their organs out of the way and does not cause infections, I wish that it didn't do those things, then that could've been another factor to take into consideration for Hemalurgists and it would have been very Ruin-y), and blood could help against Hemalurgic decay. It is apparently possible to spike a spren Could be that Brandon had something like Ishar's experiments in mind to make this work though. Also I'm pretty sure that your Spiritually perfect self is already a part of your Spiritweb. And an Electrum shadow won't be enough, it only shows a few seconds into the future, a minute if you stretch it. You'll need an Atium shadow. Then you have to contend with the problem of whether they'll even have Bindpoints, if you could access said bindpoints from the Physical given that your shadow is not a Physical thing, is that your own Spiritweb.

The Investiture conductivity does seem like Raysium's natural properties used with Cosmere knowledge though apparently they do share some Hemalurgic principles I'm pretty sure that just means similar fundamentals, how it happened shared similar underlying mechanisms but the process itself didn't actually use Ruin's Invested Art. I suppose it's possible for Godmetals to have inherent properties and interactions with their native Investiture besides their use in the Invested Arts. Harmonium does explode, after all and is used for mechanical Allomancy. Regardless of whether conducting Investiture is it's innate property or it's property as a Hemalurgic spike, it could be useful in Hemalurgy for transferring Hemalurgic charge, creating supercharged spikes, stealing the same attribute from multiple victims into the same spike (wait, can normal spikes do that? I think you can pierce once, though maybe that wasn't a hard limit, just Hemalurgic decay) stuff like that

Besides, they can Soulcast food and metals and even medicine, so they're getting supplies directly. They may not be literally making money but they sure are making the things that money would buy.

Vivenna was at the Fourth Heightening after getting the old Idrian spy's Breaths, so a 1000 Breaths. Edit: did not find any exact number in the book, but she does seem to have perfect pitch and colour hue recognition and life sense. All of these abilities do exist before reaching the Heightening, of course, they would just be less perfect. But it's safe to say she's definitely not above the Fourth Heightening. Vasher is a Returned and as such has a Divine Breath, which would make him of the Fifth Heightening, which is 2000 Breaths. He also had Peacegiver's Treasure, which is 50,000 Breaths, Tenth Heightening. The actual amount of Breaths he carried around varies throughout the novel. Iirc he started at the Third Heightening, 600 Breaths and mostly went down from there.

Stormlight spoilers, books 3 & 4 (latter under another spoiler box inside the spoiler box) and some mild White Sand spoilers as well

We don't really know the nature of unique Rhythms, and Raboniel was certainly still affected by Voidlight. I don't know if it's possible to make Investiture that is not only not attuned to / opposite of any of the Shards of Adonalsium or any combination or neutral/all, but an entirely new one. Most likely you'll still be Connected to some Shards but it might be possible via playing around with the various combinations to get something weird enough to work. I think it might work best to find pre-Shattering Investiture for this, Hemalurgically steal some old Invested Art from someone Yolish or something, or perhaps the Dawnshards. (And of course, we don't have exact confirmation of the relationship between a Shard's Pure Tone / Rhythm and Shardic Intent.) I think you might still need to do something else to get rid of your Connection to your Shardworld? I think that's different from the native Shard(s)' Pure Tones, just getting new Investiture wouldn't remove your Connections. All that said, I've liked the idea of an artificial Shard since a very long time, so I certainly hope we get to see something along these lines!

The scene in question: Yeah, that does seem to be white sand from Taldain As for this bit: ""I learned it many, many years ago from a man who did not know who he was, Your Majesty. It was a distant place where two lands meet and gods have died. But that is unimportant." We do have a short story the Traveler set on Yolen, a few snippets from the Liar of Partinel and a few chapters from Dragonsteel. You can find out a fair bit if you look around. Stuff's compiled here:

So, Nightblood was cutting apparent force, that's a bit strange to swallow. "Gravity not being composed of anything" may not necessarily be true, who knows, maybe in the future scientists will detect its force carrier but never mind that. Oh hey maybe there's "Virtual Investiture", so to speak. Oh, never mind, missed the quantum part. Hmm, well done, Nightblood, I guess. That sword just gets weirder and weirder.

You two might enjoy this tidbit if you haven't already seen this: Stormlight and Elantris spoilers

Already solving the shortcomings of Hemalurgy, I see. Yeah, I think it should work from what we've seen so far. You might need Endowment's tone to do stuff with it though.