FFXI Nasomi -- Unstable Cluster Solo (NIN/RDM)
Never fought this before on retail or on Nasomi. Heard it did not use Self Destruct on Nasomi so I thought it might be possible to solo and decided to give it a try.
I thought it would have a Blaze Spikes effect and wanted to more easily control its TP gain, so I decided not to engage and to use ninjutsu primarily for damage. Turns out it did not have spikes, so melee + ninjutsu would have been a bit quicker.