How did you come up with what metal would give what powers in Mistborn?
The metals just worked out right. [later] I see I misunderstood. The assignment of metals to powers was done mostly randomly. I started by trying to mix and match colors and hues, but that ended up not working. I also originally wanted the physical to be more common, and then move toward less common with mental and others. Hence, iron is physical, Gold is mental, [sic] Atium is temporal. The mentals don’t quite fit this, though.
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