Originally Posted by
Greatguardian
Rani is fairly easy to take down as long as you don't rely on magic. Casting times make timing your spells properly a royal pain.
If we're talking specifically about NIN, I'd use a Martial Dagger (Kamome offhand) with Ultimate/Gales/Razed Ruins atmas. Switch between Evisceration and Aeolian Edge depending on what Rani is doing. Evisceration while she's casting, Aeolian Edge when she's using a JA, and whichever is dealing more damage when she's doing neither.
I've taken down Rani fairly easily with Apoc/GH/RR Mnk just using Victory Smite. I never used any stunners or special subtle blow gear. To be honest she died fairly quickly. The most important part of the brew is your atma selection. With all other stats being thrown to 999, you get a fairly huge boost from the stats you find primarily on atmas, like Crit Damage+ and Elemental Attack+.
Either way, as long as you're attentive about not healing her, she should absolutely not last more than 30-60 seconds with a brewed DD on her if they're using solid atmas.