This has been a goal of mine for quite some time, however, have been pretty lazy about setting out to do it. Today I finally did and won on my first attempt! I went as Sch/Rdm and the fight took ~ 1 hour and 40 mins. There was 1 death incurred (which ironically was near the very beginning of the fight). Had the death not occurred im pretty sure the fight time could have been shrunk down to around 1 hour 30 mins. And as a bonus, i got drop too! ~,^
As most already know (but will mention for those that don't) the NM casts magic spells only, never meleeing. From Cure IV's, to Thundaga III's, to Death. His death spell is actually what caught me when I died, as I was stuck casting a spell on a very bad corner location. Due to the corner, and having to take the turn, even though technically "running away" you're still at the same distance as if almost standing still at the tip of the corner. For those who attempt this, be safe and make sure that your spell positioning is safe, and either on a straight away, or in a location where you won't get hung up on having to run around a corner.
As mentioned prevously, the fight was an 1 hour and 40ish minutes. Through out that time, and even with the constant aspir's, he did not run out of mp although it is possible to happen.
Key spells/abilities used through out the fight:
Parsimony/alacrity > Blizzard IV
Reraise II (or any other form of RR)
RR & Bio II should obviously be maintained full time. Cryohelix should be up as often as possible as it will do more dmg than a Blizz IV, and is a good save on MP compared to Blizz IV. Though keeping Stoneskin up isn't really necessary as you should be avoiding any damaging spells anyways, its a good fail safe, and I used it fairly often through out the fight although the only dmg spell that landed was Drain. Sublimation and Aspir are your only methods of revitalizing your mp if you don't use any meds (there's really no reason to need meds) so keep up with those religously. Drain is a good dmg spell for very low mp cost, so that's a great way to help mitigate his use of Cure IV's as well as the obvious reason of getting back HP as needed.
As for nuke spells, I stuck with Blizzard spells for a few reasons. #1, there is either ice weather or double ice weather nearly 90% of the time. So if you have Obi, its free bonus dmg, so why not right? #2 Even though you shouldn't really have to worry too much about resists, you will get some without a doubt, so the ele skill on staff as well as the INT helps with that. #3 Hailstorm: again, 100% proc bonus dmg with obi, as well as bonus INT from stormsurge should you have it merited. Even if double ice weather was already up in the zone, I still used hailstorm simply for the bonus int for dmg/resist and a lil umph to helix.
As far as how to use blizz III and IV efficiently without getting yourself gobbled up:
The NM has something of a "cooldown" time or recast time before casting another spell on you. This is your "nuke window". Nuking WITHOUT using Alacrity is so risky that you honestly shouldn't even bother attempting it. Even with Alacrity, there is a chance for him still to catch you with spells like Death or Sleepga II, which isn't fun. If you have Relic boots, these babies will certainly shine here and make you so very thankful for having them. With Relic boots, I never had to worry about any spells landing (even Death) as long as I was good to go on my choice of nuke positioning. I normally would stick to cryohelix, aspirs, etc until i had at 2 charges ready, in which time I would use Alacrity + parsimony > Blizzard IV. Mp conservation will greatly speed up your fight. So waiting 1 min for that extra charge is more than worth the time lost from doing so. Also the use of Gravity on the NM actually helps more than one would think as it helps give you more time to get spells off before he reaches his "comfort distance" to begin a nuke on you, as well as you having to spend less time running away to gain distance.
As for the Add that occassionally will link and begin harrassing you, you can usually quickly get rid of him via bind or gravity and simply running away. I usually was able to do this and continue with focusing on the NM and the mob would simply depop and repop a bit later. He's more of a mild annoyance really than any danger or problem to your fight. Just make sure that you take your safety with the NM into priority before casting something on the nq mob.
GL to other's who decide to try this, and I hope you have as much fun as I did!
PS could someone PM me with how I can put my photobucket photos on here without it giving ppl access in my album? ; ; imma nooblet when it comes to that stuff ><