Second, he has an absolutely ridiculous amount of hit points. We were killing the protectors and mephits leading up to him in under 30 seconds, and he was easily five minutes.
Normal rampages occasionally, and not a terrible fight in general, but does have an annoying tendancy to get lucky quads in. Was hitting a defensive level 70 warrior for up to 1500. We lost it at 10% because back-to-back quads dropped the warrior before the healer could react.