This strategy is written for World of Warcraft: The Burning Crusade (TBC 2.4.3), the Karazhan raid for 10 players. Mechanics and numbers match the fight on the Moonwell server.
Fight map
Hover a number on the map or in the text to highlight the spot and the strategy line. Marks follow the fight scripts.
A 10-player fight in a hidden room behind the library, needs 2 tanks. Main danger: Sacrifice kills a player within seconds if the raid does not break the chains at once. Imps from the portals keep coming until the end of the fight.
The boss and Kil'rek
The boss tank takes hits of up to 6,675 and Shadow Bolt for 3,188–4,312 every 6–16 sec. Kil'rek hits for up to 3,548 every 1.4 sec and needs his own tank. Stuns and silences do not work on him. Every 9–12 sec he puts Amplify Flames on a random player who does not have it: +500 to each Fire damage taken for 30 sec, cannot be dispelled. Kil'rek's death gives the boss Broken Pact: +25% to all damage taken. 45 sec later Kil'rek returns, and the pact fades.
From 10 sec: portals and imps
The boss casts a summon for 2 sec, and two Fiendish Portals appear near his starting spot. They cannot be attacked and stay until the end of the fight. Every 5 sec a Fiendish Imp comes out of each: about 4,300 HP, Firebolt for 181–209 with a 2-sec cast. On a target with Amplify Flames, Firebolt hits for 681–709. 24 imps come per minute. They are not immune to crowd control. Keep a player with AoE damage at the portals.
Sacrifice
The first one at 29–30 sec, then every 40 sec. Target: a random player other than the top threat target. 1-sec cast, then the player is moved next to the boss's starting spot, stunned, and loses 1,500 HP per second for 30 sec, while the boss heals for 3,000 per second. Demon Chains appear there too: 14,000 HP. Everyone except the tanks attacks the chains at once: when they die, the player is free. Ice Block or Divine Shield during that 1 sec cancels the spell.
At 10 min
Berserk: +500% to all damage and Shadow Bolt Volley for 850–1,150 to everyone within 99 yd every 2 sec.
Tanks
Taunt does not work on the boss. Keep Kil'rek next to the boss so AoE damage hits both.
Healers
Assign one healer to the Sacrifice target in advance. Watch the Amplify Flames target: the imps hit that player harder than anyone else.
DPS
The chains come first. Kill Kil'rek before the boss: the pact gives 45 sec of increased damage.
Common mistakes
- The chains were broken late: a player with 12,000 HP lives 8 sec without healing, and the boss heals all that time.
- Nobody kills the imps: 24 come per minute, and the damage on the raid grows.
- Kil'rek is left without a tank and hits a healer.
Abilities, loot and map: boss card