Thanks!
Trying to get another Edelgard (my base was +spd) I got yet another Celica, so I won't be less picky about it now.
In any case, I also got a Nagi and been thinking about my flame emperor (the male one, lol) does special fighter stack with guard axe? I have still my Hector and could pass it the other flame emperor (the female one) as I totally appreciate her b-skill. I remember you don't like armor units but maybe you do have some insight on potential builds. Too bad both are green axe units...