Maybe you can try:
Seshat, Grimm, Brynhild, Marjana, Onatel.
Onatel is working fine as flank, but she is under leveled at the moment. I suggest you put her on left flank when she is maxed. Later on you can consider replacing Grimm with Snow White at right wing.
@Mogus you can see this thread about Brynhild being very performed in Raid Diamond League.
