User blog comment:Linathan/Birthday Special: Q&A/Ask Linathan!/@comment-26355476-20150619141331/@comment-26140304-20150619222431

Maybe something like this? :D

[Ultimate Brave Burst] Starburst Stream (16 combo Light and Dark elemental attack on all enemies, adds ignore Def effect to all allies' attack, boosts all allies' BB Atk, increases normal hit count of all allies for 3 turns.