Just finished TLM and have A LOT of questions!

First of all, wow. I just LOVE a Cosmere book with so many connections to the greater Cosmere. It makes it worth to have read all the books! With that thought comes so many questions.

1. As I understand it, Kelsier is a cognitve shadow, like the Heralds of Roshar and thats why he's been able to stay alive for 300 years however how did he find a body or it even his body? Cognitive shadows are still very confusing to me.

2. He has a spike in one of his eye sockets. That means someone had to die for him to have this spike right? Also is there hints or clues to what metal this spike is or what powers it grants him?

3. How was Kelsier able to recruit people from other planets if he can't leave his own planet or system?

4. Is Sel just the most broken planet when it comes to powers? Sel's magic has been making appearnces in every book with the seons and seems like Kelsier was somehow able to bond one as well. Are Elantrians just the strongest Invested humans?

5. I think the pool that Marasi found was Trellium? If it wasnt then what was it and also how were they able to drain the pool?

6. It was mentioned Trell's army was in Shadesmar so does that mean there was another pool like this in Shadesmar? Also is it explained how people travel through these perpendicularities? They're pretty much flat on the ground, do they just climb out or something?

7. How much Lerasium needs to be burned to be a full mistborn? Seems like Wax is a mistborn but maybe not fully? Not sure about this.

8. It's hinted that Harmonium can be burned but the powers are unknown. Has no one tried to find a Harmonium misting or is simply not possible since it explodes in water and maybe would explode inside you if swallowed?

9. Lastly, were the people who helped Marasi at the end simply Ghostbloods or were they stamped to be something else?

Sorry if that's a lot but this book and series has just opened so many things in the Cosmere and I'm so excited to find out more about it!