Tiferets. Every mechanic? 2 Tiferets before you get hit with another mechanic in Phase 1. It really hurts, and it drains MP a lot. I've had to use Medica II to get over it along with Assize at times when moving. 6k damage going out is a lot to deal with, but probably is something that i220 can beat, honestly.

If you want an actual story, I had this one time in Stone Vigil where the tank decides to pull everything and the kitchen sink to the room on the right before the room you have to cross over, and he even pulled the Aevis that decides to poke its head out the door! Wiped there even with Eye for an Eye added since the tank didn't use any CDs(it was a DRK). Thankfully he learned from his lesson when I taught him how to gauge your healer and pull accordingly.