Knight Oblivion

Depends on the battleground. What are we going with for this potential conflict? I'm talking about planet and terrain (assuming the mistborn are from Scadrial and the full Radiant is from Roshar) since that can effect the fight.

I'd imagine that "fueling surgebinding with Allomancy" would require a skilled spren bonded to an Allomancer. We've seen that bonded spren have been particularly attuned to, at least, the mental state of their radiants. Maybe if that radiant used Allomancy, the spren would detect Preservation's power and be potentially able to hijack it for surgebinding... or at least guide their radiant on using it to surgebind.

It would probably depend on the strength of the Allomancer. Someone as strong as Rashek might be able to push on plate to a significant degree, maybe Lerasium Allomancers too. Somebody like an Era 2 Misting probably wouldn't do much though.

Speech patterns seem like they would be a rather poor indicator of one being a worldhopper. People speaking another language often have an accent that can potentially go away through cultural immersion and practice. Heck, languages even have regional accents. It would take an incredibly well traveled person of a certain world like Jasnah or Kiin noticing a strange accent to personally make me think that a character is a worldhopper based upon accent alone. However, apparently idioms and certain terms can slip through that can be decent indicators of worldhoppers. Vasher keeps using color-based metaphors from his home region in Nalthis despite them being nonsensical to Rosharans. Hoid/Wit has used the term "coin" on Roshar if I recall correctly and attempted to tell Kaladin a story based upon animals a typical Rosharan wouldn't recognize. That doesn't help with more nonvocal worldhoppers but it's a method to try and find some. Also, the OP fails to mention Stick, the greatest of worldhoppers.

For the duralumin steel push, I was assuming that the Listeners had some trace metals in their bodies for a Fullborn of Rashek's strength to manipulate.

If we're talking a Fullborn like Rashek (his Allomancy is super charged because he uses Hemalurgy and rebuilt himself to be an extra powerful Mistborn when ascended) then it might be easier to list ways he couldn't beat the Stormform Listener army. He's that overpowered. Heck, he could probably just push them all off the plateaus with a duralumin charged steel push while tapping compounded Feruchemical iron to make himself heavy enough to not move back.

So, I can't source this properly because I'm on my phone but there's a few issues with what you have here that I'd like to clarify. First is about Scadrian history and evolution. Evolution in terms of major changes such as the first bacteria to humans takes many thousands if not millions of years. With that out the way, Ruin and Preservation literally created Scadrial and all life on it using the non-corrupted parts of Yolen as a template. Brandon does indeed say that Scadrial is an Earth analogue, which implies Yolen is also highly similar to it, but things really didn't develop in a similar way. They were just made. As for Allomancy, the deal with Mistings and Mistborn is that the latter have a stronger connection to Preservation. While Scadrial before Rashek's Ascension had a few Mistings, the spiritual DNA for the connection wasn't strong or very common. Lerasium kick started a breeding stock of strong connection that was subsequently diluted through the centuries, decreasing the incidences of Mistborn and general Allomantic strength over time. Feruchemy, before Sazed's Ascension however, was always a whole ability. Ferrings didn't develop, that we know of, until the Terris and remaining North Scadrian populations intermixed to an unprecedented degree. There's a WoB on this that mentions that the spiritual DNA for Allomancy and Feruchemy interferes with each other which led to Feruchemists with only one metal they could use. The Kandra in Bands of Mourning mention that the Terris people are working on a breeding program to refocus the Feruchemical spiritual DNA to bring back full Feruchemists. All of this brings me to my last point. I'm pretty sure there's a WoB about there being Heroes of Ages before Rashek. We also don't really know why the Terris people exclusively had Feruchemical ability. There's been theories proposed and I haven't dived into newer WoBs recently but I think you could be on to something. It could be entirely possible that a pre-Rashek Hero of Ages gave the Terris people Feruchemy. Either that or Leras himself snuck more shenanigans past Ati for his master plan.

Heat makes metal less hard but more tough. The entire process of tempering involves reheating metal then cooling it to remove some hardness since toughness is inversely related to hardness in metals (which means that a hard material is more brittle). Casting is the process of shoving a heated liquid into a mold to get a specific shape when cooled and solidified. Soulstone is described as being similar to chalk, soft but even more easy to carve, and becomes hard like quartz. Our two comparisons are thus a sedimentary carbonate rock and an oxide mineral. The process of hardening soulstone actually sounds similar to the metamorphic process of turning limestone to marble. Well, a metamorphic process that isn't seen on Earth as only a small amount of heat and no apparent pressure is needed for the change. Also, I've read TES several times. The mention of Shai's people having worshipped stones from space sounds more like cultish meteorite worship. There's nothing in the novels that connects those meteorites with soulstone.

I don't know about the splitting of an Adonalsium pool of Investiture to get the Shards. Seems overly complex as they would have to measure the pool and create an entire method to precisely pump the liquid Investiture to different locations. Maybe it could have been done with some Yolish magic besides Lightweaving that we haven't been made aware of but I doubt it.

Personally, I wonder why not both. Having the atium metalmind bracers have spikes makes less sense now. Metalminds that are invested would be mostly allomatically inert anyways.

Twinborn Zinc, easy choice. Compounding some mental speed would be incredibly useful to me as an academic. Also, being able to manipulate people's emotions would be useful for many things in life.

I might be missing a more recent WoB, but I'm pretty sure White Sand takes place well before Baon's only known worldhopping trip.

Interesting, that also goes against the Mistborn annotations and other WoB saying that Rashek needed Hemalurgy to pull off some of his feats... Now I feel the urge to ask more clarification.

Seems pretty clear to me. "His arm bracers, which pierced his skin, were his spikes." http://www.theoryland.com/intvmain.php?i=727#16 Also, sorry for the inelegance of my post. I'm on my phone.

Great, now i can't get the thought of Kelsier and Spook rounding up some poor mistwraith, giving it Kelsier's bones, and using Hemalurgy to somehow staple his cognitive shadow to it. :'( Ascending granted Rashek a bit of hemalurgical knowledge though. It was enough to create those three, radical constructs and use Hemalurgy on himself to pull of his most impressive feats. His bracers were his spikes. While I doubt that Kelsier would be able to experiment enough with Hemalurgy to know the bind points to steal a Divine Breath, he could have gotten some knowledge to start him off on doing some marvelously horrible stuff.

I'm pretty sure Baon has two pistols and the graphic novel shows that at least some of the Darksiders on Dayside have access to pistols.

I don't remember if I've mentioned this in this topic or not, but on the physiological adaptation side of things, which includes battlefield location, Scadrial has a clear advantage over Roshar. Between Rosharans being adapted for a lower gravity environment and their susceptibility to disease (anybody remember the Purelake "plague" of the common cold?) they're going to have a fair amount of issues before even discussing tactics and resources.

Thanks for the feedback. The reason I thought Lerasium could potentially overwrite cracks was due to it being a condensed bit of Preservation's power, the power that shores up cracks in spiritwebs and thus making it difficult for the holder of just Preservation to talk to damaged people like a vessel of Ruin. I like the idea of Lerasium bypassing the need for spiritweb cracks through a strong enough Connection (feels wrong not to capitalize in this case) to Preservation. Anyways, yeah... I hit upon the idea of Spren being aware of the flow of Investiture from Wyndle and Syl's interactions with Lift and Kal. They seem to be fairly aware of their Knights' state of being which could mean they can at least identify unusual investiture.

So, I wonder what would happen to a surgebinder with the Nahel bond if they burned Lerasium. Would the cracks in the surgebinder's spiritweb that their spren occupy be removed? If Lerasium doesn't remove a spren when burned, I'd imagine that a knowledgeable spren could potentially sense the power of Preservation being used to fuel Allomancy. Maybe the spren could hijack the Investiture called up before it goes towards Allomancy for use in surgebinding.

Just want to say that Breaths are far from a precise/specific unit. The fact that there's a "quality" to each Breath kind of removes much of the specificity. If varying numbers of Breath can provide the same amount amount of Investiture/energy to achieve a heightening then your unit is about as specific as a nose... generally similar from unit to unit but can wildly vary. Actually, one of my main disappointments with the Warbreaker Ars Arcanum stem from this. Khriss is a scholar, she should have taken the opportunity to create a unit for average breath quality (ABQ from here on, that's what I always think of it as). Heck, Vasher is one of the legendary BioChromatic scholars. Him or his colleagues should have come up with it.

Isn't Aon Rao supposed to be for spirit/investiture? I'm pretty sure that's why the Elantris metropolitan area is in the shape of it and why Elantrians went through the Shaod when the massive Aon become incomplete. However, I can't imagine Aon Rao doing more than creating a connection to the Dor... That would run out or potentially not work outside of Sel. Yes, basically Nightblood increases the entropy of the Investiture system while decreasing the exergy (Investiture/energy able to be used).

This was my first idea about the question. The other idea is that night is considered the absence of sun in the sky while Darkside has its own sun. Taldain is tidally locked between two stars. Darkside faces the dimmer one which is also obscured a fair bit by a particulate cloud. It's apparently has a light level around that of dusk.

I agree with the shards continuing to influence worlds even when combined. However, I disagree about Ruin and Preservation having less influence on Scadrial than Roshar's shards. They literally made the planet and all life on it. They have manipulated the environment, weather, and the forms of investiture on the planet. The planet has moved its orbit under their power. By comparison, as far as we know, the three shards mucking about with Roshar have been comparatively non-interventional.

Autonomy picking up Odium probably wouldn't alter or add any magic systems on Taldain unless she/he/it/they/zer invested the planet. If that did happen, there would probably result in fun/crazy stuff like on Roshar or Sel.

Maybe Bavadin is Brandon's favorite character because they're a strong, independent Vessel that doesn't need your restrictive, binary gender constructs.