So when I was reading Bands of Mourning I was under the impression that whoever made the bands (the Sovereign allegedly) must have had all 16 powers. Kelsier was only an allomancer though, so how did he get Feruchemy? I think that the name "Sovereign" was a hint, and that when Spook nailed Kelsier's cognitive shadow to a body, they specifically used the Lord Ruler's body. I have no evidence of this other than the name "Sovereign" and that it is a plausible solution for how the Bands were created. I haven't seen this discussed (please link if so) and made this account just to post this theory:
A few caveats:
I have already returned my copy of Lost Metal to my local library but I wanted to cross-reference Marasi's physical description of Kelsier with physical descriptions of the Lord Ruler from era 1. This can only really only give confirmation though and not denial since its possible Kelsier has used many bodies over the years
(Side note what if the "Lord Ruler's Children" we heard about were genetically the lord ruler's but actually Kelsier's so he could have a line of strong allomancers/feruchemists to continue possessing. This seems really out there but I thought of it while typing and now this idea is just out there for anyone to see. Do we have any WoB about when these children were born?).
Is allomancy part of the physical, cognitive, or spiritual self? I.e. since Kelsier was a Mistborn does any body his soul becomes attached to gain the ability of an allomancer just like if someone actually spiked Kelsier to a person or does he only have whatever metallic arts his host body has?
Why would he have scars at the end of BoM if it wasn't his own body?
This is more of a "what-if" and me asking some cosmere questions than a strongly supported theory but would love to hear what others think.
