Billy Hares (feat. Koleda) [F2P-Friendly]
For those with a Koleda but missed Soldier 11 and Piper
Koleda's here as purely a stun unit, but can sometimes help trigger disorders, though it'll be difficult to line up with this team's normal rotations. Nicole provides grouping, swing jazz, and defense shred while also activating Billy's Additional Ability. Because of the massive amounts of AoE damage this team provides, gameplay consists of focusing down the largest enemy, and trying to land Billy's Chainx2 ultimate while the enemy is dazed.
Team:
Ideal bangboo is probably Amillion to help supplement single-target damage, but any relevant utility can be used (As f2p, I decided to go with Resonaboo for general grouping utility as well as an easy transition from Billy to Zhu Yuan down the line.)