Corrin emblem any good?

So I like making character teams (due to the game's lack of any real content) to clear grand hero battles and various other maps (not for competitive arena). And I was wondering if anyone had any advice on how to go about building a Corrin emblem team. In particular, countering mages seems to be the big problem, as the only real counter I could possibly see is female corrin for red and maybe blue mages, and maybe new year's Corrin for green mages with G tomebreaker. Has anyone else built a Corrin emblem? Or have any advice? Thank you
Edit: I'm not throwing away close counter, warding breath, or any crazy 5 star exclusive skill, this team is mainly for the challenge of various non-arena maps