1) Does flame blade allow iterative attacks?
I've seen a lot of arguments on this one. Is there a definitive answer?
2) Could flame blade benefit from improved critical?
3) If it can benefit from improved critical, presumably an augmented mythic flame blade would have a threat range of 10-20?
4) Would spell perfection increase the threat range from improved critical? (for a ray, if not flame blade)
Since it is not a set bonus, presumably no, but just making sure.