God Metal effects

[Elias]

So we know from Rhythm of War that Odium's god metal, raysium, naturally conducts Investiture. Now with The Lost Metal revealing that Autonomy's god metal, trellium or bavadinium, is able to naturally repel foreign Investiture, I start to wonder about the other god metals.

The other god metals we've seen are aitum and lerasium, and the unnamed god metals of Honor and Cultivation. I wonder if the Intent of the Shard in question influences how the god metal reacts to Investiture, or, if each Shard is somehow tied to a Dawnshard (vis a vis the mural in the Dawnshard novella), whether the Shard's corresponding Dawnshard determines the god metal's properties.

If the former, I wonder if lerasium naturally stores and preserves Investiture, which might be part of how burning it transforms someone into a Mistborn, in addition to granting Connection to Preservation. Following the theme, atium's interaction with Investiture might be to destroy its physical manifestation, returning it to the Spiritual Realm. Honor and Cultivation are harder. Honor's god metal might somehow process foreign Investiture it comes into contact with, maybe into Stormlight, and Cultivation might process it into Lifelight?

I'd love to hear other ideas on the subject, as trellium seemingly being able to produce a nuclear fission reaction in ettmetal has really got me thinking.

[DiePie]

My 2 cents is that the fact that Trellium reacts (is that the right word?) with Ettmetal means that they're highly opposed. Which leads me to believe that Autonomy tried (or is trying, we don't really know the specifics) to create Trell as a counter to Harmony. The fact that Lerasium and Atium are byproducts signals to me that it's going for the weak point, and that the easiest way to defeat Harmony would be to split the shard back into Preservation and Ruin, which you could read quite a bit into.

[HavingTheHasHoidAPurpose?]

I think a cool effect of burning Tanavastium would be to be able to make contracts with others, binding yourself to others.

[Elias]

9 minutes ago, HavingTheHasHoidAPurpose? said:

I think a cool effect of burning Tanavastium would be to be able to make contracts with others, binding yourself to others.

No, I'm not talking about Allomantic effects; that's too much of a stab in the dark at this point yet. I'm talking about the metals' effects on Investiture, separate from any distinct manifestation of Investiture.

[Leuthie]

I believe Shardblades are Tanavastium. Able to pierce Realms and sever Connections within Physical objects or beings. The abilities of Shardblades might be a created effect by the actions of Spren, but the material itself is probably Honor's Godmetal.

BTW: What does effect does ettmetal/Harmonium have?

[Elias]

The metals of Shardblades are confirmed to be an alloy of Honor's and Cultivation's god metals, with the exact ratio depending on the Radiant Order of the Blade in question, and the Honorblades are made of just Honor's god metal.

That said, I'm fairly certain piercing Realms and severing Connections are not abilities of Honor's or Cultivation's god metals, but rather a characteristic of the Blades, a sort of imbued property. If the properties of god metals are influenced by the parent Shard's intent, I don't really see Honor's intent being very conducive to severing things. Honor is uniquely applicable at binding things together, which was a big part of why Honor was able to bind Odium to Roshar and bind the Heralds into the Oathpact to contain Odium's armies.

As for harmonium, it has the effect of reproducing Allomancy or Feruchemical powers in its vicinity, and it might be able to do so with other instinctive manifestations of Investiture, like Surgebinding or the powers of an aviar. This would track with Harmony's stated intent of "make it possible for as many people as possible to make their own choices", as harmonium interacts with Investiture around it by doing more of the same thing.

[lacrossedeamon]

Could Honorblades granting surges be tied to tanavastium's innate effect?

[IlstrawberrySeed]

It could be possible that Tanavastium creates investiture uses, as Harmonium repeats Investiture uses.