Just Commander Zalts

40% boost to Atk and max HP, enormously boosts BB Atk & enormously boosts Spark damage for 2 turns when BC collected has exceeded certain amount

Considerably boosts BB Atk

BB

Freezing Opposition

1 DC28

11 combo Water attack on all foes, considerably boosts BB Atk for 3 turns, considerably boosts BC, HC drop rate for 3 turns & hugely boosts BC efficacy for 3 turns

SBB

Imperial Forces: 100 Strong

1 DC29

15 combo powerful Water attack on all foes (damage relative to HP remaining), slightly boosts OD gauge, hugely boosts BB Atk for 3 turns & considerably boosts BC, HC drop rate for 3 turns

UBB

Naraka: Arbuda

1 DC30

19 combo massive Water attack on all foes (damage relative to HP remaining), enormous 2 turn Atk, Def reduction, inflicts enormous Spark vulnerability for 3 turns, hugely boosts BB Atk for 3 turns & enormously boosts critical hit rate for 3 turns