I just got my 5th tier on the Kensai tree. I got the Deadly Shot ability, and it shows on my action bar, but when I click on it it says I may be in the wrong stance (I have no stances active besides power attack and some monk stuff), not have enough resources (I suppose this relates to not having boosts, but I have them) or wrong weapon type.
What is happening? Are you, by any chance, only able to get deadly strike melee or ranged according to your chosen focus weapon type? My focus is heavy blades (but I wanted the Deadly Shot).
I did take the previous ability as a ranged one as well (the pre req one).