I am sorry if this has already been answered recently, but I could not find a specific post on it.
Is it still true that Shadowfiend must be up to benefit from power-ups? So for instance, should it be cast just before BL/Hero is active or will it benefit from these effects even if it is cast after BL/Hero has been hit? Similarly, is /use 13 /use 14 /cast Shadowfiend the same as /cast shadowfiend /use 13 /use 14?