Dor

During Post Catacendre, 4 of the 16 Allomantic metals, namely Chromium, Nicrosil, Cadmium and Bendalloy, were unknown. Preservation swapped cadmium and bendalloy with atium and malatium, which means PC Scadrials should have been able to know abot 14 metals. However, in The Hero of Ages, PC Scadrials seem to be aware of 16 Allomantic Metals. Why is that?

It could be possible that Bleeder wasn't referring to Lord Harms, because she didn't make an attempt on his life in the book. It could be that no one knew he was alive, like it was with Wax's uncle and sister. However this is just a theory and its certainly more probable that I am wrong.

While that may be true, it is possible that Wax's father may have something to do with the story in "The Lost Metal", since in Shadows of Self, Bleeder tells Wax that "She hasn't even killed his father yet", which implies that he may be alive, though Wax thinks contrary.