I came back half-dead from the testing ground, and I'm feeling lazy, plus there's all this skip-related stuff going on. I probably won't manage it; mechanically interesting concepts are a burden for the team, and it's unlikely that I'll be able to pull it off at the end.
As practice shows, the most flexible concept is the Ricier. The main thing is to level up his faith, and then he'll have three spells of your choice. The previous Ricier-Amamius was definitely not a burden; he was just overpowered.
Or Gnosis, I think it's roughly the same. Her abilities might even be stronger (again, the main thing is faith).