I wish I had a Bipina, she'd fit perfectly in my Waifu's squad.
Leucocoryne: (Stage) +10-30% Attack Power each time a Solar Blast is used. (actually, it doesn't seem to be Stage, but Battle, which is why I stacked shine drop in her group)

In a good group, some unexpected units can really pull ahead of the rest thanks to other units that some might consider "useless".