User blog comment:Aertix/Team Build Help Trial 3/@comment-26455864-20151211013958

I'll assume that your cost is 280 (since cost is doubled for trials) These 2 are the essentials

Bestie (Lead) - Amazing BB management

Shera- Mitigator, ATK buff, some more BB management

Everyone else is going to be a filler for damage basically.

Claire - Spark buff, BC drop rate buff

Medina - Insta-BC

Fei and Fang - damage

Any decent 7* friend will suffice (Zenia and Chrome are both perfect for this since they have BC on spark. Hadaron is good if you just want to kill Maxwell.)