Team without magic damage - viable?

Hey, so I've been looking for a blazing blade team for a long time with units I want to use. Now I have an idea with Legault, L!Lyn, Karla and B!Hector. (I would prefer L!Hector over B!, but I don't like to mix blessings in a team and B! Covers blue.)
Seems pretty neat to me despite the fact that they all just hit for physical damage..
Any experience how it works? I am considering to replace B!Hector rather then the rest. Maybe Micaiah or Ophelia could work here. But them again it's not a themed team anymore. The other mages from Blazing blade are not really an option.