To kill summonning mobs I use pet tanking. I root then debuff mob, start dotting, send pet before getting summoned, then dot the mob to death (12 dots loaded), my healer merc healing the pet. It works pretty well (I finished mercenary in Chelsith that way and I am finishing Xorbb mercenary), but it is often close (pet under 20%), and pet dies about 20% of the time, I have to finish the mob tanking it.
I have all passive pet AAs (8800 AAs), but no activated one (like Companion's Blessing or Fortify Companion). I was wondering if they are worth using, or if I should find other way to boost pet (like mage gear). Any advice ?
Thanks