I can confirm that he definitely has truesight, he saw through our RDM's Sneak and Invis and responded with Dokumori: Ni before beating the hapless mage to death. He casts/recasts Utsusemi: Ichi/Ni very quickly, too, even when he's just standing around un-aggro'd- much faster than normal NIN mobs.
Me and my ls went to kill this guy a few months ago. We has 3 nin tank, a few whm, and assorted jobs. After a failed (had no clue how hard it was). The weaker copies are very weak and can be soloed by a nin. But best if a few blm just gaIII them to death. First ones on Fenrir server to kill it. No drop, no Title. Any idea if it drops anything?
My ls took this nm down about a month ago(I think). Pretty hard fight, but short also. Lucky me was the one who got to pull him and unknown to us at the time that his Uts. does more than just give shadows, it actually makes weaker copies of himself, up to 4 copies in all.
What made him hard besides his copies is that he(and his copies) spam Fire Spit, which either takes 3 shadows from a nin, or ignores them completely and does about 250-300 dmg per hit, times that by 5 and you have a dead nin extreamly fast.
We won by three blm doing thundaga III first thing to wipe his copies out then slowly wearing him down with melee. The blm didn't do anything after that because when he will recast Uts. and make more copies of himself so blm need to be ready to -ga again. If all the blm don't -ga and kill the copies, they will use the nin two hour when they get to about 25% hp. Also, when the True nm gets to 25% health, he will recast Uts.: Ni and two hour immediatly afterwords, along with his copies two houring as well.
We did this with three nin tanks, three whm and other assorted melee, but I would highly recommend having at least two pld and for the puller... hope you have a whm with rb3. Pulling this mob three times(took us three times to kill) I died pulling every single time as a 75nin.
I travelled to Mamook a couple weeks ago with a full alliance for the sole purpose of breaking some mirrors and to do some recon on these new NM's. Now, granted, we were not a full 75 alliance but all over 65 at least with probably around 10 75's.... 2 75 pld tanks. So we all buff up, write letters to our families in case it were to go badly, yell some obscenities into the sky, and brace for the unknown as our Sam pulls this *******. What followed was 2 straight minutes of screaming... followed by silence.... followed by something like "whoa". Anyway, this things nutz... anyone with any idea on how to beat him?!? I need revenge!
I was exping in mamook and we saw this guy.... being a lvl 75 pty, we decided to have a go. I voked it and then saw like 8 mobs coming at me and i thought wow, bad link. WRONG every one of them were the same name. and even worse, they all spam a move called firespit at the same time, it goes through shadows. i onyl survived to rounds of it, but from what i could tell, it either does more dmg as ur HP lowers, or it does more dmg the more they use it. First round did 91 dmg x6, the next did 394 x6... I was also told that all his replicaes attack the person w/ most hate on main mob. So if u wanted to take this guy down, ur gonna need alot of tanks to bounce hate constantly, and alot of healers.