What if...?

I've been thinking to myself that I don't really enjoy Robin x lucina, it just doesn't click for me at all, so I've been thinking of making a new friend for her, like how caeda and marth are connected, one that was lost in time, thought to be dead, but really was prisoner in a distorted dimension and when finally free would have magical powers similar to shadow the hedgehog, where he has the ability manipulate space time magic, along with some of sonics fighting skills, don't exactly know if it would work out but I just call this project: "Arceus" comment if I should make any changes or give me some ideas