This is a very useful Job Ability for any dancer!
I use this a lot when wanting to gain fast TP in preperation for large healing, using shadows to protect yourself using flourishes to stun and recasting shadows, with no need to use TP, gaining 200+%TP is easy.
I personally use a kard/Joyeuse so i can easy hit out 4hits. I cannot express how great this is. hitting 4 times frequently.