
For warlocks, this means:
Gurtogg is impressively armored. He looks like the biggest, baddest tank to ever swagger into an instance. He looks mean and like he would hurt you. This fight has two basic phases which alternate, the tanking phase and the fel rage phase. You MUST watch your threat on this fight. Gurtogg is untauntable and he disorients the main tank occassionally, causing him to lose threat. Stay below the top three tanks on the threat meter.
Gurtogg will throw out tons of damage during phase 1, using Acidic Wound - inflicting 250 nature damage to the main tank every 2-3 seconds and reduces his armor by 500. Stacks up to 99 times and lasts for 1 minute. Disorients the main tank and attacks the person second on the treat meter. Knockbacks the main tank, causing him to lose threat. Arcing smash that frontal cleaves the main tank and those in front of him with 5000 damage and applies a debuff which reduces healing taken by 50%.
As you look down into his room, there are waterfalls on each side. When the boss is pulled, he will be tanked in the center in front of one of those waterfalls. For simplicity sake, we'll say he'll be tanked on the left side looking into the room. The ranged people will be lined-up in front of the other waterfall and in a column down the center of the room.
Now, imagine two nice neat columns of ranged dps that literally perform a timed square dance during the Phase 1 (tanking) portions of this fight. Every 10 seconds after Gurtogg is engaged, he will place a debuff on the 5 people farthest from him (the group against the right side waterfall). This debuff, called Bloodboil, inflicts about 14,400 damage over 24 seconds and is stackable up to 5 times. Three of the raid groups will be assigned as sponges, each alternating to the right side waterfall for their turn to receive the debuff. You will want to practice your square dance of these three groups alternating positions before attempting this boss.
About 90 seconds after the beginning of phase 1, Gurtogg will cast Fel Rage on a random target and shower that person (and anyone within 5 yards of that person) with Fel-Acid Breath, inflicting 2850-3150 Nature damage and an additional 2750 damage every 1 second for 5 seconds.
The Fel Rage target will have the following debuff: 15,000 armor increase, 30,000 health increase, increase in size of 175%, damage done increases by 300%, decreased cost of spells by 50%, and increases healing done by 100% if you are one of those classes. While in Phase 2, Gurtogg will only focus on the Fel Raged person until that person is dead or the Fel Rage wears off. This is the time to do maximum damage, not worrying about your threat.
During Phase 2, Gurtogg may also apply the following: Arcing Smash - Lashing out in a vicious arc, inflicting normal damage plus 125 to enemies in a cone in front of him, also reducing healing effects by 50%. Acid Geyser - same effect as Fel-Acid Breath.
This fight will continue to alternate between the two phases until the boss is dead. He enrages 10 minutes after the first pull. As you can see, there are tremendous amounts of damage dealt during this boss fight. The healers will be strained to the extent of their abilities. Be aware of that and watch how much you tap them for healing.





