6dc5455c____The_Coppermind___17th_Shard__Entry
[Chapter] 73 [Entry] 
I have spoken of Inquisitors, and their ability to pierce copperclouds. As I said, this power is easily understood when one realizes that many Inquisitors were Seekers before their transformation, and that meant their bronze became twice as strong. There is at least one other case of a person who could pierce copperclouds. In her case, however, the situation was slightly different. She was a Mistborn from birth, and her sister was the Seeker. The death of that sister–and subsequent inheritance of power via the Hemalurgic spike used to kill that sister–left her twice as good at burning bronze as a typical Mistborn. And that let her see through the copperclouds of lesser Allomancers.
The Hero of Ages/Epigraphs - The Coppermind - 17th Shard
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