By the time I got Casia to +5 without ignition, she started outperforming Virupa. I then ignited Cacia to lv. 5.
From what I gathered "a turn" is based off of everyone in the party doing an auto attack. Cacia's tap skill is good for 3 turns which is very long. On top of that, the attackers are all moving very fast. Lv 60 +5 is enough. In my case Cacia at times can get 2nd place after Mafdet.
There are all these variables that determine damage output. When it comes to Cacia she seems to get stupid strong around half the battle.
Even at just +5 no ignition she can potentially hit this hard with all the buffs and debuffs in place, if not very close to it. It should be obvious that Cacia will be useful in future fire World Bosses, and for that reason she's a keeper. When we raise her cap she becomes more than just a booster unit. When fully ignited, I wonder if she'll outperform Mafdet in WB. . . . The title of this thread and the above text is sound, but it's also an excuse for me to show you something you don't care about and If you're reading this it's already too late, now behold !!! An updated flex !!!