User blog comment:Pauolo/Dishonored 2's Most Wanted List/@comment-6716431-20170221155237/@comment-1500935-20170306101124

I'd wager it was a bug that had yet to be fixed. There would be no point in collecting a charm you can't use apart from breaking it into whalebone.

Speaking of power-related charms, I only found those influencing adrenaline after buying Bloodthirsty, and it was near the end of the game.