Being new to the game, I've no idea what to do with dupe characters, I got 2 Julia, 2 Duma and 3 Gunnthra.
Guessing you mean Legendary Juila and not the original one, in which case she has access to Mirror Impact and the only holder of an Oath skill. The A skill is really useful for mages or anti-dragon units, especially slower ones who don't want to be doubled if attacking. How useful Atk/Res Oath is remains to be seen, but it's an attack buff at the end of the day and all but 2 units in the game want that.
Last edited: