I'm normally kiting the adds on 10 man heroic, so I don't get much of an opportunity to just dps on this fight, but were I put in that role I would place a Living Bomb on the main Construct target, Magmaw, and either a second construct if one is up or on one of the parasites. That would give you great pyromaniac uptime. You can also throw out a blastwave on the parasites to help whoever is kiting and most likely put Ignite up on a few of them, giving you a guaranteed Pyromaniac buff.

Also, you can get a combustion off on the pull, the initial Exposed phase and the 3rd Exposed phase, in my experience while kiting (I am still able to compete with damage done to the Exposed Head even though I'm kiting during the entirety of p1 as I can blink from the parasites and fish for a decent ignite and put up combustion before they reach me).

A few tips:

- Getting 3 fast Corrupting Crashes on the first add phase is made much easier (healing wise) when your guild forces Cho'gall to transition to 85% whilst he has a Flame Orders up. Doing so means he will start the first add phase ("phase 2") with a second Flame Orders in a row, instead of going into the add phase with a Shadow's Orders. This makes healing the mage for the 3 corrupting crashes needed much, much easier.
- In order to achieve the above, many guilds learning the fight will have to Ignore killing the first 3 Elementals (using tank/raid cd) to force the transition during Flame's Orders

- You should be able to eat 3 crashes during the first add phase.
- Use Mage Armor (helps mitigate not only the Shadow AOE but you'll most likely OOM yourself from spamming Pyroblasts with Molten Armor)
- If you have the TB Mirror trinket, or enough badges to get it, consider equipping it.
- You may opt to stay slightly outside the raid while insane. This is so people who break MC with various damage dealing abilities won't take chunks of your health off at a time doing so. However, the raid needs to be mindful you may need single interrupts (as you'll miss the DB / Typhoon)
- Don't be afraid to use Mana Shield often (especially while learning it)
- Consider readjusting your spec to pickup Improved Scorch (if you didn't already have it)
- If you use double/triple mages, Malformation shadow bolts can do a bit of damage from the other corrupt mage. I like to keep Mana Shield up until the first Iceblock, which will remove the Malformations.

To keep Corrupted Mages alive until phase 2 requires a cooldown rotation that can survive 7 Shadow AOE's. (Advanced guilds reading this may do it with less aoe's, but for guilds who get Cho'gall to 25% on the 5th set of Adherents.. 7 will be right). For my guild, i'm opting to send double/triple Mages insane. Once everyone knows what to do, it becomes a repeatable rotation to keep everyone alive until phase 2:

All AOE's: Power Word: Shield and....
AOE 1 = Barrier 2
AOE 2 = Iceblock
AOE 3 = Shaman Totem 1
AOE 4 = Barrier 1 and Sac
AOE 5 = Shaman Totem 2
AOE 6 = Barrier 2
AOE 7 = Shaman Totem 1
P2 = Sac + Barrier 1

You need to work with your Guild / Raid Leader to work out a rotation to stay alive to Phase 2. This will involve a number of people. In my macro above, there are about 8 people who have some role in keeping just 2/3 Mages alive.

It's important to know where each AOE number actually takes place in the fight. Expand the spoiler tag to see:



The spoiler tag above shows what an attempt should look like, getting Cho'gall to 25% before the 5th set of Corrupting Adherent spawns. It also gets him to 85% during a Flame's Orders, and forces him to do a double Flame's Orders (starting the add phase with Fire -> much easier for the mages to eat 3 crashes in succession).

While you may have expected more generic tips than what this post detailed, the most important thing to know is that having a Corrupted Mage is a team effort.

To manage the corrupted Mages correctly involve multiple people (cd rotation), or the entire raid (having high enough rDPS to get a double flame at the start, not spreading out too much during first adds to make it easier to eat 3 crashes in succession). You may need to educate your raid of this.

Yeah, the answers were great!

One little question still, though:

About the stacking. You talk about taking crashes for corruption.. but i saw some videos where the mage just stood in one of the addpools to stack to 100. How do you actually stack to 100?

I can confirm with Engineering Profession Global Thermal Sapper Charge does indeed proc incanter's absorbtion with mageward granting around 500 sp every 5 minutes.

Mageward is a 30 second duration buff, so I cast it on myself before pull and have a macro

/use Figurine - Jeweled Serpent
/use Mana Gem
/use Global Thermal Sapper Charge
/cast Blood Fury(Racial)
/cast Arcane Power
/cast Mirror Image
/cast Arcane Blast

to start my burn phase.