The Splintercast Reads Mistborn: Secret History, Episode 1

RE: the metal and souls correlation: On the Expanse of Vapours, Preservation's close proximity The shape of Scadrial's soul (Thanks for the correction, Weiry!) makes metal glow with Investiture.  In the Cognitive Realm at large, the Investiture that comprises a soul also shines.  It's Investiture glowing both times, so the connection is natural.  

RE: Preservation: Also of note (and I didn't notice this in the first chapter my first few times through), Preservation is literally coming apart at the seams.  

Oh, Kelsier.  First to punch a god, then to recruit a god into a thieving crew, then to try and con a god.  At least in Preservation's experience.  

RE: Hoid's ride.  Of note: the corpse is wearing a white robe.  An ex-Sand Master, perhaps?  (Note that the other candidate outfit, Szeth's assassin garb, was a special case)

RE: Shadesmar: That is Rosharan for "Cognitive Realm" and thus applies simultaneously to the entire Realm and just Roshar's corner of it. I prefer to use it to refer solely to the ball pit that Roshar calls a subastral, but technically it applies to both.  

Yay! I've been waiting for this for sooooo long.

On the glowing of metals, I disagree with Landis' interpretation, I would argue it is less Preservation's proximity as it is the natural Realmatics of Scadrial.  But setting that aside and discussing the actual mechanics of what is happening I think it's more like how gems glow when infused with Stormlight.  In that Brandon has said that the light they emit is not actually the Stormlight leaking from the gems but that they act sort of like lightbulbs screwed directly into the Spiritual Realm.  Likewise metals glow because they are the focus of power on Scadrial and there is the potential for power from the Spiritual Realm to pass through them.

On the Perpendicularity, it's not the atium, it's the Pits themselves.  You were right in referring to them as places where the Three Realms intersect (or at least to the extent of our knowledge).  The Pits are where Ruin's power naturally collects, and in the case of atium, leaks from the Spiritual Realm.  Same thing with the Well and Preservation's power.

No Cephandrius is /not/ Hoid's original name.  Cephandrius Maxtori is the pseudonym he uses in Dragonsteel and is one of the oldest pseudonyms he has (though not as old as the name "Hoid" itself).

Personally I greatly dislike the use of Shadesmar to refer to the entirety of the Cognitive Realm and use it exclusively to refer to Roshar's subastral.

@Landis963 the other candidate for a white robe is an Elantrian - remember, when a person goes through the transformation, or at least the Shaod (I think that's what it's called - don't have the book in front of me ) they are dressed in white robes before taken to the city. Likewise, when we see Hoid riding Spanky he uses a liquid to keep him afloat, presumably the same liquid we see the IRE drinking a little later. Could be just a coincidence, but knowing Sanderson, probably not...

1 hour ago, dashardie said:

@Landis963 the other candidate for a white robe is an Elantrian - remember, when a person goes through the transformation, or at least the Shaod (I think that's what it's called - don't have the book in front of me ) they are dressed in white robes before taken to the city. Likewise, when we see Hoid riding Spanky he uses a liquid to keep him afloat, presumably the same liquid we see the IRE drinking a little later. Could be just a coincidence, but knowing Sanderson, probably not...

Mistborn takes place several hundred years after Elantris, i.e. after the Shaod was repaired.  For Spanky to be an Elantrian, he would need to be a Hoed to act the way he does.  The timeline just doesn't match up.  (Of course, Hoid could have just nabbed the first Elantrian to be dumped into the pool and kept him moored at the Selish Shardpool, but that's a long time in a hostile environment for a Hoed)  Also, for the White Robe to apply, Spanky would need to have gone Hoed within days of his exile, or at least before New Elantris was established (because otherwise he'd be in an eye-watering outfit of garish and ugly colors, thanks to Sarene).  

@Landis963 Ahh good points... I guess I only saw the link between what the IRE drink and what Hoid puts on his oar and Spanky, and rolled with it