Worth noting that the Vortex Ring of Fending is generally considered to be crap.
I've seen DF groups attempt it. 6/6 failed -- a pretty lovely record. In 2 of them, someone raged and the party bailed. In 1/6, we went back to DWW and the OT just couldn't keep aggro. On the other 3, we succeeded in clearing the fight using DWW. The reality is that when I eat DWW without any healer help and with no parries, I come out other side with over 4000 HP in reserve. I once had two good healers and ate no damage at all from the burst (Crit adlo + Stoneskin + Sacred Soil = two zeros from the WWs). I always run with my i82 pentameld set. You can certainly be geared in i67 and do DWW.
