Keli ' dan the Breaker ( tactics ) Keli ' dan the Breaker , the fel orc jailor of Magtheridon , is the final boss in the Blood Furnace wing of Hellfire Citadel . Abilites . Shadow Bolt Volley : Launches shadow bolts in all directions hitting all players in 40 yard range . Normal 1000 damage , Heroic 2000 damage . Burning Nova : An AoE similar to Blast Wave that deals massive damage to players in a 35 - yard range . Keli ' dan will emote and turn invulnerable before doing this giving you time to run away . Normal : 5000 damage , Heroic 10000 damage . If anyone except the tank is caught in this , they will surely die . Strategy . The Keli ' dan encounter is composed of two phases . With a Priest or Paladin ( for Prayer of Shadow Protection / Shadow Resistance Aura and Dispel Magic / Cleanse ) and a skilled tank , the battle is trivial . Shadow resistance will help in this fight but is not necessary . First , Keli ' dan ' s five Warlock companions must be killed . Individually , they are not very strong ; if the party can crowd control two or three of them , so much the better for surviving the encounter . If there isn ' t any ( or much ) crowd control , have the tank pull the 4 or 5 loose warlocks around the corner into the room the party just came in from . The warlocks will all clump up in the doorway and begin casting on the puller , making them easy to AoE . Be sure to have the tank stationed near the door for when Keli ' dan aggroes . This can be made more easy if you have a Warlock in group that could enslave one of the Felguards that ' s just outside the room , the Felguard can tank the first phase easily . This cannot be done in Heroic mode , as the demons cannot be enslaved . The warlocks will cast Shadow Bolts causing approximately 1000 shadow damage . They also will cast Mark of Shadow ( magic debuff , all shadow magic taken is increased by 1100 , lasts 2min . ) It has a short casting time , so , if possible , remove the debuff immediately . Try not to let the warlocks all gang up on one character if you can ' t dispel their debuff , or that character is dead if he or she gets hit with a few bolts with the debuff active . If your party has no magic dispelling ability , keep the last warlock sheeped or otherwise crowd - controlled while waiting for the debuff to expire . Don ' t fight the boss with any debuffs active if you can avoid it . Once the last warlock is dead , Keli ' dan will come for the party . He casts Shadowbolt Volley , deals 1000 damage to all enemies within 40 yards . Keli ' dan will also occasionally yell , " Closer ! Come closer ! And burn ! " and will stand in place , immune to all damage for a few secs , then suddenly blasting away with Burning Nova , deals AoE fire damage to anyone in a surprisingly large radius . The tank and any melee DPS should run away from him ( run , don ' t back up ) when he begins his yell and they will be able avoid this damage completely . However , if no - one is in the radius of Burning Nova , he will still cast Shadowbolt Volley at everyone . Heroic . Keli ' dan will pull every player toward him before he begins Burning Nova , making it harder to avoid it . If you stand near him you won ' t get pulled in , giving you more time to run away , though this tactic of course still leaves the fight rather tricky for hunters . However , if you start running the second you are pulled in then you can still get out of the blast radius in time . While the pulling does increase the time it takes to run out , it does give ample visual warning to get moving . This will work best with a less organized group , that cannot call out the nova over Teamspeak or Ventrilo for players standing close . As soon as his blastwave is completed , he will throw another shadowbolt volley . It ' s imperative that the magic debuff that gets applied to the party is removed before this . It will increase the damage from the shadowbolts by 1500 . He also applies the debuff to the party throughout the fight , so it will need to be constantly removed . Note . It is possible to reset him , just run up the ramp and wait for him to yell " Closer ! Come closer ! And burn ! " , after he does his AoE he will run back , and reset . It is possible to acquire a " debuff " called Rage of Magtheridon during this fight by stepping into one of the bright blue lights streaming up from the ground . The effects are " Melee Attack Speed increased by 30 % , Ranged attack speed increased by 30 % , Spell casting time decreased by 30 % " It lasts for 30 seconds and appears as a debuff and cannot be removed . The light will vanish when it gives the debuff , but there are more than five of them around , so everyone can start with one to expedite the slaughter of the Channelers .