The Grumpy Elantrian

Full feruchemist with lerasium

3 posts in this topic

So I've been thinking about whether it'd be possible to create a full feruchemist using lerasium?

Since alloying lerasium with a metalmind makes a feruchemist of that metal, could you alloy lerasium with a metalmind that would form a full feruchemist? Perhaps nicrosil?

Since nicrosil stores investiture, if a full feruchemist were to store their investiture inside a nicrosilmind and then alloy that with lerasium and a regular person were to burn it, would they become a full feruchemist?

If I've made any terrible mistakes due to a lack of understanding of lerasium or nicrosil, feel free to correct me.


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Where have you heard that alloying with a metalmind makes a feruchemist of that metal? As far as I know that only works with allomancy and mistings.


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Currently, we don't know the origin of Feruchemy at all. 

However Feruchemy is attained, its natural state is a Full Feruchemist. Ferrings only exist because of interbreeding causing a conflict between the Spiritual genes for Feruchemy and Allomancy.

If a metalmind were made from lerasium, we don't know what it would do, but burning that should do what any other form of compounding does, and replace what it's allomantic effect is with the Feruchemical one... Seeing as we don't actually know what lerasium's allomantic effect is, it may still produce the side effect of making you Mistborn though. 

If you were to store in a metalmind though, and then alloy it with anything else, your going to be locking that investiture up in a form that is inaccessible. 



What would happen if a Feruchemist fills, for example, a tin metalmind then mixes it to make a pewter metalmind? Does the stored attribute change? Is the Investiture gone when you melt the metal? What if he just makes it into a tin metalmind again?

Brandon Sanderson

If you make it impure, you'll keep the investiture, but won't be able to get it out. If you make it back into the same thing, you'll be fine, and can access it normally. If you try to fill it, after changing the composition to make another viable metal, it will act a little like a computer hard drive with corrupted sectors. Some of it will work for the new investiture, but you won't be able to fill it nearly as full. (Depending on how full it was before you melted down.)

This holds for basic uses of the metallurgic arts. Once you start playing with some of the more advanced parts of the magic, you can achieve different results, which are currently RAFO.


Similarly, if you were to soulcast a metal would it have similar effects of corrupting the investiture and making it inaccessible? Like if you turned a steel metalmind into pewter.

Brandon Sanderson

I've stayed away from soulcasting and forging in these types of discussions, as I feel my answers will dig too deeply and prompt more questions that, eventually, will lead to lots of RAFO type questions. I don't really want to go there--but I will say this. Changing invested objects with other magics is hard, and often requires such a force of investiture yourself, that it becomes very power-inefficient. Just like we can technically turn lead into gold right now--by spending way more money than the gold is worth.


So you could, for example, use electrolysis to dissolve a metalmind in water, then reverse the reaction later to get the investiture?

OR, better question, if you store investiture in one allotrope of iron, can your retrieve it off you change to a different allotrope?

Brandon Sanderson

I see no reason why these wouldn't work.


So would forging with the blood of a radiant(kaladin, dalinar,etc) work on a shard blade from a fallen radiant to say change who they had bonded, or how the bond was broken (to say death instead of giving up on the oath)?

Brandon Sanderson




Edited by Calderis

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