Phoenix is garb (trust me on this.)
Homutsubi can be really good if you have a spark pattern. Since his 6 star is out he can be terrifying.
Michele is really good.
Vargas is meh at this point.
Ramna I don't know much about.
Dia IS EXTREMELY good. Her SBB is literally Felneus SBB and she HAS A TON OF ATTACK. She can be utilized.
That's my rainbow squad