Originally Posted by
Feanor306
Another thing you MUST realize if you want to beat this fight. In both Normal and Heroic difficulties, 5minutes after you engage him, regardless if he is still in p1 or in p2, he will become Superheated which will increase his damage by 10%, and stack 10% more every 10 sec. Therefore it is absolutely crucial to switch to phase 2 at 4:30-4:40 minute mark the latest, otherwise you will just get destroyed by superheated stack damage increase. If he switches to p2 at 5:00 minute mark or later, you will almost surely wipe, regardless if you have 2 or 3 healers.
1. Use heroism in p1, preferably around 4:00 - 4:20.
2. Set raid cooldowns for AT LEAST the first 2 stomps in p2, with tranquility/divine hymn etc powerful healing cooldowns between stomps.
3. Use Deterrence/Bubble/Dispersion/Anti-magic shield/Cloak of shadows etc immunity/lifesaver abilities at he 2nd stomp in p2.
We used 1 tank, 2 healers , 7 dps.
2 rogues and 1 fury warrior were steering boss.
Hunter + elemental shaman were full time on legs, only switching away to kill Sparks of Rhyolith.
Shadow priest + Affliction lock were aoe-ing fragments, and killing sparks, while dotting the legs if they ever got free time.
Basically it is all about the dps on legs, the earlier you switch to p2, the easier p2 will be, we had to go through many wipes to figure that out.