Do all three Metallic Arts still exist after the events of the book? Are Allomancy and Hemalurgy slightly degenerated now that Ruin and Preservation are dead, or does Allomancy still draw upon Preservation’s power (just held with Sazed now)?
Allomancy, Feruchemy, and Hemalurgy all work as they once did. However, now they are more directly affected by the presence or absence of the mists, which will slowly return to the world but not be of the extent they once were. (The mists are now an extent of Sazed’s power, and where they roam, he is better able to influence things. There will also be two kinds of mists.) Note that in the future, Feruchemy powers will start to fracture and split, creating Feruchemical “Mistings.”
Yes, this means that in the future series, it will be possible for a person to have one Allomantic power and one Feruchemical power. It will create for some very interesting mixing of powers.
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