There is actually another way of killing this peticular boss, all you need to do, is DPS this guy down in 90 seconds. We did it today on our second try on him, and had around 15 seconds left before he would go into stoneform. This tactic wont be available to every group out there since most wont have the dps for it, but if your group has a good DPS, i would advise you to try this tactic, since it will make AQ faster and cheaper (repair costs ;))
-- Bifur @ Dunemaul EU
Directional Mana Drain -- Debunking Edit
It turns out that Moam does not drain directionally. My guild tested the theory in the following manner:
1. We divided our mana users up into three groups.
2. We specified locations 120 degrees apart around Moam for each group: group 1 was at the head of the long pool, group 2 was down along the pool towards the entrance, and group 3 was directly behind his spawn point.
3. We took a look at the logs to see who he drained.
Group composition was as follows:
Group 1: Viktoria (warlock), Dagny (priest), Tulgey (priest), Druce (druid)
Group 2: Aeryck (paladin), Lyonya (druid), Ellian (mage)
Group 3: Mileager (paladin), Jierdan (warlock), Brandon (priest)
I visually confirmed that the positioning was right. Here's a chunk of the log:
9/28 23:14:26.045 Moam's Drain Mana drains 500 Mana from Viktoria. Moam gains 1000 Mana.
9/28 23:14:26.046 Moam's Drain Mana drains 500 Mana from Jierdan. Moam gains 1000 Mana.
9/28 23:14:26.047 Moam's Drain Mana drains 500 Mana from Ormgron. Moam gains 1000 Mana.
9/28 23:14:26.047 Moam's Drain Mana drains 500 Mana from Mileager. Moam gains 1000 Mana.
9/28 23:14:26.048 Moam's Drain Mana drains 500 Mana from Brandon. Moam gains 1000 Mana.
9/28 23:14:26.048 Moam's Drain Mana drains 500 Mana from Ellian. Moam gains 1000 Mana.
I don't remember whose pet Ormgron is, but you can see that Moam happily drained people from all three groups at once.
Oh, and while I'm chattering -- he always drains six people unless there aren't six people to drain. I've never seen his drain resisted, and I've never seen him drain less than 500 mana. I have, um, over 1200 examples of Moam's Drain Mana in my logs, because I obsessively log everything.
-- Abbi@Earthen Ring (US)