Our group had a mage COH us (she can invised) to location 815, 545,10
It was just under the ledge with the human mobs right above you (they don't agro).
She waited until the Age roamed to the shoreline, coh'd us (no agro) and then we quickly shrank.
re-invised until the mob roamed right on top of us then attacked...
no other mobs came, no other mobs cared. after that it was about killing, staying invised in between fights just to make sure.
A lot of HP, hit's hard, be ready to group heal...
cheers,