Yeah, I need to try again.

Now that I've got some ideas on spamming the nightmare with purge/dispel, I might be able to get past Paletress.

Still nervous about the third phase as I haven't worked out any ae casting as yet. I need to take the time to work up the IS AE click casting stuff so I can use blizzard/rain of fire on the second phase along with a few CL's from my shammie.