Originally Posted by
ChahDresh
Completed as 896 Disc priest, after about 40 attempts. Ran cold out of mana at the end, ha.
Talent setup: Castigation, Masochism, Psychic Voice, Mindbender, Power Infusion, Halo, Purge the Wicked. Masochism is a must to help recover from the Fel Bursts you can't interrupt. Psychic Voice should be obvious. My uptime with Twist of Fate was really low because you typically stay at high health or get killed almost instantly, so I went PI instead. I initially was going with Divine Star, but Halo works better for a number of reasons; while two DS do more damage than one Halo, running around trying to position it right was more trouble than it was worth, while Halo is fire-and-forget, and Halo has the added bonus of clipping totems during certain moment. Purge the Wicked helped a lot both because I needed all the damage I could get, and because the auto-spread helps clean up the worms.
Consumables: on my kill, I used Prolonged Power (he hugs us so Deadly Grace underachieves), flask, rune, health/mana pots, and Drums, which turned out to be the critical component I was missing for the longest time; the extra damage early in the fight while there are fewer mechanics to manage made all the difference.
Legendaries: I used Prydaz and Sephuz. Prydaz saves a ton of damage over the fight; Sephuz has a ton of uptime. Don't have Cord of Maiev or it would be worth considering, but probably only over Sephuz, not Prydaz.
Dealing with the Fel Burst: this is the number one thing that will kill you. Psychic Scream is the counter, but the CD of Burst is half the CD of Scream even talented. You don't have to interrupt every time you can (I eat the first one just because I already have a PW: Shield and Prydaz), but if you don't interrupt you need to have measures in place to keep you up. Generally though you'll be interrupting as often as you can.
To survive Fel Burst, you need to be topped off, have a fresh shield, and (ideally) Fade. The muscle memory you'll build is you'll get a sense of when the Burst is coming, Fade, then Shield, before the hit comes, then Shadow Mending to get some health back and give a buffer against future damage.
Dealing with the worms: during the earthquake cast, three rocks will fall. (Don't be hit by the rocks.) You want to be in the general position here, preferably so you have the rocks in front of you. If you do, you'll be able to see the eggs as they fall. DoT them up *immediately*, then Halo when you can. (This may be about the time of a Fel Burst; don't rush the Halo if it means messing with surviving the Burst.) If your DoT was quick enough, this should be enough to pop the eggs before the worms ever hatch. If not, you can manually DoT the worms, or sometimes your Purge will spread naturally from your Penance and take care of it.
Dealing with the totem: not much to say here. it's a priority target to stomp with a quick DoT cast, and sometimes Halo will sweep it away on its own, which is nice. Humans can pop out of the stun in emergencies but don't plan on this.
On DPS: you can see I went heavy on the consumables, and that's because additional DPS goes a long way on this fight. This is for three reasons. First, a shorter fight gives fewer opportunities for things to go wrong. Every time you have to repeat the mechanics you risk making a mistake and getting one-shot; the shorter the fight, the fewer times you might make a mistake.
Second, the bad guys use their abilities more and more rapidly as the fight progresses. By about four and a half minutes, the CD on Fel Burst is short enough that you'll have to burn your heavy cooldowns to maintain. Shortly thereafter things become quite unmanageable. If you're not close to finishing him off by the five minute mark you're probably toast.
Third, mana. I ran out of mana, even popping a mana potion with an Alchemist's Stone boosting it. The big worm doesn't have that much health, thankfully, so just roll CDs to survive his Sonic Scream (which has one-shot potential when he enrages) and you can get him down.... not leisurely, but safely. If you run out of mana when Tugar is still alive you're toast.