User blog comment:Mich, Michele & Kuhla/Future Units Preview/@comment-26464145-20160317190656

S uper  BB: Phoenix Road[Support/Offense] 18 combo powerful Fire attack on single foe (damage relative to remaining HP), fills own BB gauge to max & hugely boostsBB gauge & OD

I think you made a mistake on Arus's ratio, you said "70% every 1% HP remaining". I'd like to have a SBB at 7300% dmg on a single foe, and illimited, but i think it's not really possible :P