User blog comment:Ultrahi1/Should i use Avani or Zenia/@comment-26331700-20160415180517/@comment-26347196-20160417022755

Avani proved to have more use than Zenia.

On Spark department, both Zenia and Avani offers BB fill on spark on their LS, but Avani offers an extra 100% Spark damage boost. Zenia has an 80% Spark damage boost on BB/SBB, which is trumped by Avani's 100% Spark boost coupled by 30% to proc 30% Spark vulnerability AND BB fill when spark buff. On this part, Avani > Zenia, completely.

On normal attack nuke, both Zenia and Avani offers double normal hit count on their ES, with the condition of spheres that boost Attack a lot. On UBB, Zenia offers +2 with 200% bonus damage normal attack (totalling 400% damage) with +250% raw attack, while Avani offers +1 on her BB/SBB and +3 on her UBB (also totalling 400% damage) with +130% Spark damage and 100% Spark vulnerability chance AND damage. On this part, they are pretty much tied, though Zenia might have won Avani by only a pinch.

Avani and Zenia also offers other roles that differ from each other. Zenia is a decent BB Atk buffer on her LS,SBB and UBB, as well as instant BB fill on her BB. Avani, on the other hand, is a status inflictor as well as punisher on her UBB.

All in all, Avani is a much better sparker than Zenia, and offers the same satisfaction of normal attack nuke like Zenia. Furthermore, she's a very good status combo game, and you can simply benefits the rest of Zenia from another BB Atk buffer unit. Thus, you should go for Avani.