We have released a video for the Green Fire quest line, which you can find embedded above. While the quest line is not that difficult, the fight against Kanrethad Ebonlocke (which starts at 03m47s in the video) is very complex.
The video should provide you with the proper strategy for the fight, but we feel that it is important to also have a written format of the guide (especially for things that we could not put in the video, like macros).
We would like to thank Zinnin (Youtube / Twitch) from the US guild Midnight Sanctuary for providing us with footage of the boss.
The first piece of advice for this boss is to use Grimoire of Sacrifice. You will not be able to use a demon for this fight, as you will have to enslave a Pit Lord. So, if you were using one of your demons, it would end up being dismissed anyway.
Once Kanrethad is summoned, you will be able to attack him freely for 20 seconds without him doing anything, so pop up cooldowns and burn him down.
After 20 seconds, he will summon a Pit Lord, which you need to enslave. We strongly recommend making an Enslave Demon macro:
/target Pit Lord /cast Enslave Demon
Otherwise, you run the risk of him stunning you before you finish casting Enslave Demon, wasting a few seconds.
Once enslaved, the Pit Lord will assist you against Kanrethad. He has three abilities that you will find useful.
- Fel Flame Breath deals 25k damage every second to every unit and player in its path. It lasts 3 seconds and every time you take damage from it, it dispells a debuff from you. This ability will be extremely useful. You will need to make two macros for
it, see below.
- Charge enables you to stun Kanrethad for a few seconds. This ability is designed to help you interrupt Cataclysm, an ability that would otherwise kill you.
- Health Funnel heals you for about 300k on a 20-second cooldown. Bind it and use it as often as possible.
The first macro will cast Fel Flame Breath on you, use it to remove the debuffs that Kanrethad applies on you (see below).
/cast [@player] Fel Flame Breath
The second macro will cast Fel Flame Breath on a random Wild Imp (adds that Kanrethad sometimes spawn and that you should keep grouped up).
/target Wild Imp /petattack /cast Fel Flame Breath /targetlasttarget /petattack
The next thing Kanrethad will do is cast Curse of Ultimate Doom on you. From that moment on, you have 7 minutes to kill him before you die. He will also keep trying to apply Excruciating Agony and Seed of Terrible Destruction on you. You must keep dispelling them with the Pit Lord's Fel Flame Breath.
Approximately every minute, Kanrethad will cast Chaos Bolt at you. While you can interrupt his cast with the Pit Lord's Charge, we recommend you saving it for Cataclysm. Instead, use Sacrificial Pact and Twilight Ward to mitigate the damage from Kanrethad's Chaos Bolt.
Shortly after, Kanrethad will cast Cataclysm. Interrupt it with Charge. For the next 6 seconds, Kanrethad will take 100% increased damage, so try to do as much damage on him as possible during that time.
Roughly 1 minute after summoning the Pit Lord, Kanrethad will summon Wild Imps. Your goal here is to run all the way back as far as you can, so that the Imps group up in the center. Then, use Shadowfury to stun them and use the Pit Lord's Fel Flame Breath macro to damage them. Finally, use your Demonic Gate to reset your threat and your Pit Lord will keep aggro on them. His subsequent casts of Fel Flame Breath should eventually kill them. You can use some of your AoE abilities to finish them off, if necessary.
Other than trying to apply his debuffs on you, Kanrethad will also often target you with Rain of Fire, which you need to move out of, and Soul Fire, which deals unavoidable damage.
Approximately 1 minute after summoning the Wild Imps, Kanrethad will summon 3 Felhunters. Killing these Felhunters as fast as you can is the most crucial part of the fight. They have the ability to dispel your Enslave Demon off of the Pit Lord, which can be extremely problematic. When Kanrethad is summoning
the Felhunter, you should use your Demonic Circle to travel as far as you can from the portal. Then instruct your Pit Lord to run as far away from you as possible. This will ensure that the Pit Lord is out of range from the Felhunters.
When the Felhunters spawn, use all your offensive cooldowns to kill them fast. Also, make sure to make good use of your defensive cooldowns, because Kanrethad will use his very damaging Chaos Bolt shortly after you kill the Felhunters.
One minute later, Kanrethad will summon a Doom Lord. We advise to let the Pit Lord get aggro on it by hitting it with the Fel Flame Breath. Then use the Demonic Gate to reset your aggro. This way, the Doom Lord will keep attacking the Pit Lord and will not pose any threat to you.
From that moment on, the fight is just a repetition of itself. After 1 minute, you will get a new wave of Imps and 1 minute later, a new wave of Felhunters. You need to deal with these waves in the exact same manner as you previously did. We advise you to refresh your Enslave Demon on the Pit Lord before the second wave of Imps, so that it does not expire while you are fighting the Imps.
The second Doom Lord should be handled by keeping him banished.
Community suggested weak aura string: