LogFAQs > #986019281

Probably Corrin, too many ways for him/her to be incredible while also being a convenient source of skills for another unit of your choice. I'd say Revelation Corrin is definitely the best after Sigurd/Seliph, your early squad is pretty ass in that game so it's practically always a Corrin carry for a sizable chunk of the game if you don't go out of your way to stop it, Conquest/Birthright are more arguable vs Edelgard though I think I'd still give the Corrins the edge (Edelgard actually a bad unit that costs turn by making part 2 happen? It's likelier than you think!)