Eldreth SpectreEyeful wrote:https://www.youtube.com/watch?v=MtDOkyqjme0
Kinda shows the Specters are patrolling, but not really in the spots you are asking about.
This would tally with the allakhazam comments on the quest The Instigator's Enchantment -
http://web.archive.org/web/200712301446 ... quest=8950"At the Eldreth area, outside the room is a wrap around corridor. Two invisible Eldreth Spectre roams there. I stealth in, wandered around the left side, aggro one, hit cooldowns (Evasion and Adrenaline Rush), kill it. Then ran over the to top of the ramp to the big tree, rest up, ran back and wandered some more to aggro the other, hit cooldowns, kill that. Then reset the instance"
"We went through to the next area with the ghosts. Invisible ghosts spawn here so there is no need to pull the ghosts in the next room. We just walked up and down the path until 1 spawned. Be careful because 2 can spawn at the same time."
This from allak 2006 on Magister Kalendris -
http://web.archive.org/web/200604150718 ... wmob=11487"He is there, but you cn hardly see him, make sure you have a warlock that can cast detect invisibility on your party (also nice for the invisible guards that are everywhere in the area) "
And
"He is in the bottom level SW corner, just a few groups of 3xUndead spirits to get to him."
From 2007 -
http://www.wowhead.com/npc=11487/magist ... s#comments"I farmed him for a bit to get the pattern, and as a lock I could see the mobs being talked about when detect invisibility was on. The mobs pat around the room, so they may or may not be around the boss when you engage him. If you don't have the ability to detect invisible mobs, then you would be wise to pull him to the wall on the exact opposite side of the room where he is kneeling. There are two invisible mobs that literally pat right up in front of him, and one comes very close, yet on the opposite wall you will not have a problem with pats. Just clear the pack in front of him and pull"
"There are three invisible patrolling mobs. Detect invisibility reveals them, otherwise they may aggro when they patrol Kalendris' position while you are fighting him."
Nostalrused...