if you guys go, send me a /tell. ill be farming all day, since doing these has ran me fairly broke.
but the right party set up for this is a must. the combo that eil said, for example would be very risky and would only succed if all 3 were rng, and used EES 1 after another when toe mob hit 15-20% health. iv now lost to this NM 7 times, i can can clearly see the problems with each party set up i have went with(with the exception me me and corr's original Pt the first time, which would have easily won had we been properly prepared with ethers and potions)
you need a pld, a whm, and a rdm, now way around any of these unless 2 war/nin are gonna take turns kiteing instead of pld, which still isnt likely to work well. you need a third mage of some kind to to help heal in emergencys and deal dmg near the end, blm or smn, very preferably smn. besides this you need 2 high dmg attackers, prefeably ranged. 1 sam and 1 rng would be best.
but you will need either astral flow, or EES to win. when the mob starts spamming AoE, you need major dmg and fast.