[@vancexentan] To elaborate on it, "inducing bad luck" is just how it appears, when how it functions is him directly influencing probability to induce misfortune. He has to understand what he's doing and how it works for it him to exert this influence. For example, someone pulls a gun on him, and he exerts his quirk with the understanding of, "if the powder load is insufficient, the gun will misfire," and so the gun has a pop with no kick and the gun squib-loads. He can't directly influence the outcome, just induce the failure.