Was doing fine taking this mob out with a chanter and mage, but ran into a challenge when one in the group of mobs was a rejuvenator. Not sure if it EVER runs out of mana.....ran us both down to zip...so after burning staunch recovery, figured out I needed to mez the rejuvenator and take out the mobs I wanted, and then "blanket forgetfulness" the rejuvenator, and move on.