Updated information on Challenge Mode and fixed the post overall.
Anyone have the GC trigger for the Curse on HM?
On HM there is some sort of time limit to kill him. If not killed fast enough he spawns a lvl 100 epic elephant that wipes the raid. He emotes right before he spawns it and says something like "This has gone on long enough...."
I think the time limit is 10 mins.
HM: Pull Undr and his four guards. Split them off with an off-tank or two and kill them quickly. DPS Undr to 75%, at which point the Coldain add will spawn on Undr. Kill it, then back to Undr unti 50%. The second add, the wurm, has a fairly mean set of AEs, including a tail swipe, so best to turn it into the wall and DPS it quickly. Back to Undr after, until the final add at 35%. This last add is the majority of the challenge, as it will require both a scout and fighter debuff. However, the debuff isn't on the mob right away, so you have to watch for it and hit it when it shows. This add will need to be pulled away from Undr and killed very quickly as it does Hammer Arc and a nasty knock-up AE. Once the add is dead, if you're still in control of Undr, it's easy to finish out from there.
The AEs throughout the fight are, of course, more powerful than their EM counterparts and include knockbacks. This mob as well as the Prime Cornicen seem most prone to duplicating their AEs, so beware of that as well until the issue is resolved. You will definitely notice a difference from pull to pull if this happens to you.
All in all, not terribly different from the EM version, apart from the archetype-specific debuffs required on the named and the third add.
any info for this HM fight?