I got mine along with MANY other casters just for the ID4. No more mage bracers for me!! Gave up 15 hp to wear it, but will make it up by being able to wear my usual bracer instead of a summoned Gallenite's on raids. It will do until I grab an ID4 focus elsewhere.
Hits for 1500, routinely nuked to death by the trillion wizards, necros, mages and chanters in the line up. Our guild got about 10 of them before we had kitted up every one without an ID4 item. We had a druid as back up healing just in case (thanks Kittaro) and various melees who agreed to hang around to tank him for the millisecond that he lived, lol. Seldom made it past 30 seconds of life, what with the accumulated firepower in the room.
He spawns about every 30 minutes, has a placeholder that is killable with a single blast, then he pops in the corner on the fire. Everyone simply let loose on him and he dropd the fables and the regular Ishva robe, which I am sure many alts are currently wearing.
Working on the principle that the only good gnoll is a dead gnoll, we routinely AEd and slaughtered the entire zone, and many people picked up the Collectors splitpaw Eye for their Firework stick too. Splitpaw has never seen as much action since the game began I would warrant.