Attumen is the first boss you’ll meet in Karazhan. The fight is simple and straightforward. Understand the mechanics, bring suitable gear, and you should have no problem.
Here’s the fight in a nutshell. Kill Midnight. Tank Huntsman off to the side when he appears. Kill the Huntsman when he mounts up on Midnight.
Sound simple? Well, it is.
When you first arrive, Attumen is nowhere to be found. Midnight is standing, oh so lonely, in the middle of the stables.
One of your two tanks should charge in and tank Midnight where he stands. He doesn’t do anything special, nor does he hit awfully hard. The tank with the greatest threat generation should be on Midnight from the get-go.
The DPS should stay on Midnight until he reaches 25% health and de-spawns.
Pick Up the Huntsman
This is more of less the toughest part of the fight. When Midnight hits 95%, Attumen will spawn. He’ll pop up right next to Midnight – in the middle of the melee scrum – and the other tank needs to pick him up right away.
If the tank does not pick up Midnight, he’ll run amok killing healers. Be prepared to smack him in the face, and you’ll be fine. As an added precaution, you can have a Hunter Misdirect Attumen to the tank.
Once the tank picks up Attumen, he moves off to the side and beats on him. There should be no DPS on Attumen, so threat is not an issue. Stay above the healers and don’t die. /yawn
One thing to note. He has a cleave. Point him away from the rest of the group.
Mount Up and Kill the Huntsman
Once Midnight reaches 25%, the Huntsman will trot over and mount up. After he appears mounted, he drops all aggro. Everyone should stop what they are doing and let one of the tanks pick him up. This would be a bad time to Evocate.
Again, the tank should turn Attumen around – he cleaves. He also charges a random target, but the charge has a minimum range of 8 yards. If everyone stands in melee range, or at minimum Hunter range, they will be unaffected by the charge.
He periodically throws down an AoE curse. The tank should be decursed, since it will hinder threat generation, but the duration is short enough that you don’t need to worry about the DPS.
Continue to DPS Attumen until he dies. Then collect your loots. It really is that easy.
There are two pivotal moments in the fight. When Attumen appears and when Attumen mounts up. Perform those transitions well and you’ll have no trouble at all.
Once you’ve got Attumen down, why don’t you read up on some other Karazhan boss strategies and move on to Moroes.