About M!Corrin weapon refinement

Not sure, maybe a mage or a tankier melee unit? The important thing to notice is that when 1 space from your ally, he will be getting+6 to his stats, and corrin will have around+3-+4 to all of his stats thanks to being near his ally. So it's actually mutually beneficial for both parties. That being said, I'd go for a mage, or somebody that can really use +6atk and speed (anybody) as well as that +6 def and res.

Let me answer this with a picture:

edit: what the bloody hell for some reason it shows a different picture than what I uploaded. It's supposed to be a Halloween Henry with Owl tome. It actually turns into him when you click on it. Wierd glitch.

His support unit should be someone that uses all stats equally, as they'll benefit the most from it than anyone else. Speedy dragons, such as Fae, Frima™, F!Corrin, etc come to mind, as they use every stat.

My LA!Hector :p

LA!wood makes use of every stat he has.