This boss is a joke if your characters are advanced enough. 400-500 well-spent AA, and Time gear is all you need. My war is 15.6/2900 buffed, and cleric 10.7/10, and when I warped at first to succor it brought me up top into the dome. I 2box'd the guy down to about 40% but realized the other 4 people in my grp would probably like to do something. Here is how I do this mission in 10mins.
GRP SETUP: WAR CLE 2ndary healer (Sham advised for Panther/Champ) DPS DPS DPS (can be any class as long as it's a melee)
Step1) Setup camp. Move your chars to the other side of the entry room.
Step2) On your cleric, make two hotkeys. /warp loc 370 70 73 and /warp succor
Step3) /tar Frag.
Step4) /warp target. Wait until you see him swing, or cast.
Step5) Warp to the loc above. Wait until you see him appear on top of you.
Step6) Warp to succor.
Strategy for fight:
This mob is a necromancer and he has alot of mana. The first half of the fight is better spent DPS'ing. With my crappy grp that generates about 700-1000 total DPS, it's a long half. You should be able to be conservative here with the CH's. I would reccomend CH around 90% on any appopriate tank. (Note, if you're taking almost 2k hits, you need to get alot more shielding. This mob maxes at 1762 on me at 24% shield.) When the mob runs OOM, /disc defen. From this point on the 2ndary healer needs to keep a HoT on you, and spotheals. Chain cast CH as soon as gem pops, even if it only heals for 10-15%. If the mob gets a solid round of flurries and you see tank's hp percent-wise is lower then Time-To-Cast on CH, duck the CH, hit Divine arb, lay down a Pious and hop back on the CH horse.
As long as you are smart about his casting and match it to your healing strategy, this boss is a joke. I can do the fight solo heal but my toons have some acceptable gear.
Good luck and hope this makes it easier for others. BOTH VERSIONS of this are giving the 'hard' mission btw, even with the plugin provided, as well as legit request.
If you found this useful btw, bust my red cent cherry and toss me one. I wanna be cool too!