Very easy camp. NM will respawn every 2hr-2hr30min. Timed spawn so nothing has to be killed for this guy to pop. Drop rate with TH3 is very good. I'm 2/2 on kills with TH3.
I agree with Drayco, when you go to camp this, bring TH2 or higher, it really helps your drops. With my LS i was 1/6 with out, then 3/4 with. So yeah, bring you a thf if you can. This piece is well worth it, and you wont take it off as a blm.
Blue Mages: This makes an excellent macro piece for your magic bursts (or magic spells) with Burst Affinity. It's not really a great choice for full-time, however, unless you're using a magic extensive spell set. Keep in mind that Magic Atk. Bonus does nothing for breaths. Nonetheless, because it's really quite a simple camp (and the monetary payout is quite nice) it's worth getting either way. I've noticed a pretty decent boost to spells like Eyes On Me.
MAB is as we know it (i.e. MAB I = 1.2, MAB II = 1.24 etc). Items with the description "Magic Atk. Bonus"+X means to add X/100 to the current MAB. For example, Moldavite Earring which states "Magic Atk. Bonus"+5 means to add 0.05.
1/3 for me. Nm isnt hard to camp, and any lvl 75+ job can solo it blindfolded. Bring a friend if your job is less than 70 for added safety. Good Hunting