a syl ren frost warder  

They max hit for ~ 137 and min for ~ 46. I don't know what their spells hit for since the MA took basically all the damage and my parser doesn't show the spell damage.

Our group did a total of 16,800 in melee damage, not including any nukes or dots from the 60 enc/60shm/59cle in the group. I'm guessing in the neighborhood of 18-19k hp.

These will run when low on HP and they run fast. They run back towards the entrance of the cave so if you have those mobs cleared you should be okay. I'd still recommend rooting them if you don't have a snarer.