3 guys in the dome tent thing at the dead end where the Mage Epic mob is triggered. This guys PH is the middle mob (at least thats where he popped for us.)
Be careful not to walk inside the dome or u can possibly trigger the mage epic mob which screws up the event for anyone coming to do their until it respawns. Just pull the mobs inside with range item. Mobs immediately outside the dome cannot be aggroed.
The front 2 guards seem perma rooted and un-attackable, I incited them, and attacked them. Nothing, except the named aggroed and DoTed me. 64 shammy, 66 war (me), 67 ranger, 67 chanter, 66 cleric, 67 wizard. The named and the 2 back guards aggroed and came out, CCed the two adds and tanked the named. Was easy, slow landed, and with def he hit like a BoT named...if that.