Yeah, but that’s kind of a different thing.
It is hereditary, but it came from somewhere. […] Which is a RAFO, but it’s not a big RAFO. There’s not something you missed in the books, or anything like that. It originally came from Preservation long ago. And there are other ways to get it, but you have not missed any major plot points regarding that. Good question.
different thing=using a hemalurgical spike to gain feruchemistry
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