NIN?
Internal Release, Blood for Blood (if you can survive), Enliven, Suiton, Trick Attack > First (Kassatsu, Mug) > Second (Duality, Stun), Dancing Edge/Aeolian Edge (Dream Within A Dream, Ill Wind) > First (Overwhelm, Fuma/Raiton) > Second (Assassinate).
Use DE/Fuma if you do not have Enliven up, always use Raiton on tanks, replace Suiton with Fuma somewhere in that rotation if you come out of hide to TA so you can do your GCD quicker.
My favourite past time is running around as NIN alone in Frontlines and getting into 1v1/1v2/1v3.