User blog comment:Linathan/Unit Spotlight: Eternal Guardian Zeruiah/@comment-94.195.45.159-20151228182519/@comment-26140304-20151228183424

"only unit capable of attacking and providing all elements into one Brave Burst"

There aren't any units that provide all elements and attack in one Brave Burst prior to Zeruiah. Shida and Nice Burny provide all elements, but do not attack with their corresponding Brave Bursts.