[Kameron8]

So, either this skill is bugged or I just have a lot of confusion around it, but here goes:

https://gyazo.com/7e16deeb6342a9017368178e3d94e6dd

Based on the in-game description, if you and your target are both airborne, the damage for Elemental Rave becomes magical, and is changed to use your elemental attack for each respective element it cycles through +10%. So as I understand, the damage would be 110% Fire Atk, 110% Ice atk, 110% Wind Atk, and 110% Lightning Atk. However, when you use Elemental Rave while airborne...

https://gyazo.com/c4d03358a1d7e0a545660c61ed7c2323

The damage is a flat amount for every element. Prinny died before lightning could proc, but the point stands, as I don't have even elemental attacks for those elements anyway. 

https://gyazo.com/a4cc9d60e854bcb3680dd813fe67f840

Based on my reading of the ability, the damage doesn't change to solely use your elemental attack.  It uses the base formula, then tacks on 10% of the corresponding elemental attack to each iteration of damage.  Looking at your stat page, your Fire, Wind, Ice, and Lightning attack are all between 60-70, meaning that bonus would (I believe) always be rounded down to 6.  I'm assuming, because of that, you're seeing the same damage number on each tick of damage.