to be stenchoth on lvl 90 - ignore attack bonus spells & shields. Just cue up 20 resurrections, and res any party member that dies. I didn't even need to use a speed up spell. Once you get to 60ish Wounds on Stenchoth, you do enough damage that he'll fall apart.
http://gyazo.com/449fc63fd05c0f631a5f357954ca0540.png i just want to get my iron ore. I'm only level 18, so killing those 4 poison wolves was a huge PITA and this is what happened at the end. Not happy.