C ' Thun ( tactics ) C ' Thun ( pronounced " Kah - Thoon " or " Kathune " ) is the final boss in the Temple of Ahn ' Qiraj . Until the release of the original Naxxramas and later " The Burning Crusade " , C ' Thun was considered the most difficult raid boss in the game . In its first inception , C ' Thun was considered to be unbeatable with the current level of gear . However , following a number of hot fixes , phase two was made considerably more controllable , and the first kills were registered in a matter of hours following one such hot fix . Strategy . Phase 1 . The initial phase of the C ' thun encounter , characterized by an alternation between the Eye shooting Eye Beams for 50 seconds followed by 35 seconds of Dark Glare ( detailed below ) as well as periodic spawning of mind flay eyes and claw tentacles . When first entering C ' thun ' s chamber , the best strategy is to shield a player with high nature resist and have him enter the room ahead of the rest of the raid . This will cause the first few eye beams ( described below ) to hit the player with high nature resist , giving the rest of the raid a chance to get into position . A hunter is the ideal candidate for this , with their + 60 Nature Resist from their aura and their ability to feign death and then put on normal gear . If the raid enters the room at the same time it is likely that a large portion will die from a chained eye beam . Alternative strategy at higher levels is that a warrior tank drinks a Rage Potion and pops Spell Reflect . The rest of the raid mounts up and runs into position , while the warrior Spell Reflects eye beams . 2 , 625 - 3 , 375 Nature damage . Eye of C ' thun casts one every 3 seconds , if other players are standing close ( within roughly ten yards ) the beam will jump to that person and deal double the damage it dealt to its previous target ( actually the damage is multiplied by 1 . 5 , so the second target gets around 4 , 500 - 5 , 000 damage ) . This repeats indefinitely until the number of targets within range that remain unafflicted is exhausted , so spreading out is key . You may use the C ' Thun Warner mod to adjust your distance with other raid members . The initial target is completely random , and the eye will roll around to face its target . This ability can be resisted , up to 100 % . Nature protection potions are cheap to make and can absorb nearly all damage . Nature resistance armor is not necessary . 43 , 750 - 56 , 250 Shadow damage on any player who passes through the beam , which appears red and extends radially out from C ' thun during the " red phase " of stage 1 , where the eye , appearing visibly red , will rotate this beam slowly clockwise or counterclockwise 180 degrees . The initial target is random , but there are signs of where the dark glare will begin , as the eye not only turns red , but a shadowy cloud appears in its pupil shortly before the beam is let loose . It is possible to blink through it . Every 45 seconds eight small eye tentacles will spawn at the edge of the black expanse which seems to house C ' thun , knocking back anyone standing within a few yards of their spawn points , equally spaced in a circle around it . These eyes have a Mind Flay spell that does 750 damage a sec for 3 secs , but are susceptible to many abilities such as counterspell , gouge , and stuns . The Mind Flay is randomly targeted . These tentacles have around 2 , 300 health . A team of one melee and one caster are enough to kill them in 4 seconds ( don ' t use attacks with long casting time ) . Other ranged may help , but no more melee or they risk suffering a high - damage Eye Beam . Targeting them may be tricky . You may click their base , use a macro " / target eye tentacle " , or press V and click their health bar . Note that it is possible to target them while their graphic is still fading in ( while they are spawning ) . Mind flay is a binary spell , that is , it can be resisted completely ( anti - Shadow buffs help ) , but its damage can ' t be reduced . The slowing component of the mind flay has been removed , but abilities which remove slowing effects ( such as escape artist , shapeshifting , and blessing of freedom ) still work to counter the flay . These tentacles spawn at random locations with alarming frequency at various points of C ' thun ' s room . Their melee is fairly weak : approximately 200 damage per hit , but they also do a one - time knockback when they are spawned called Ground Rupture for 1 , 350 - 1 , 650 damage . Additionally , they can do a hamstring attack , making it more difficult to flee from the dark glare . These tentacles have around 1 , 500 health . These can sometimes knock players into the Dark Glare . Phase 2 . Begins immediately upon bringing the Eye of C ' Thun to 0 % . If no tentacle is alive , players are taken out of combat and are encouraged to drink during the transition . During this phase , C ' thun has a shield which reduces all damage taken by 99 % . In order to bring the shield down and damage it , players must engage the stomach from inside ( see details below ) . These continue to spawn the same as in phase one , however they now spawn every 30 seconds instead of 45 like phase one . It is key in the fight to cover all the area around C ' Thun each time small eye tentacles spawn . Again , assigning teams to take down Eye Tentacles is helpful . Once every minute , with a 30 - second offset from Giant Eye Tentacle spawns , C ' Thun will summon a Giant Claw Tentacle at a random person ' s feet . Anyone on or near the spawn will take 3 , 000 - 4 , 000 damage from the Ground Rupture that occurs , as well as being knocked away across the room . They melee for about 1 , 500 on a well - geared tank with tier 2 gear . They also have a Thrash ability ( two extra attacks ) , meaning they will one - shot anyone who doesn ' t have a very high armor rating . If no one is in range for an attack they will burrow and re - emerge at full health , repeating the Ground Rupture attack . They have approximately 90 , 000 HP and there appears to be no cap on the number of tentacles that can be spawned at one time . Once every minute , with a 30 - second offset from Giant Claw Tentacle spawns , C ' Thun will summon a Giant Eye Tentacle . They do the same Ground Rupture when they appear , and also melee just as hard . They repeatedly cast the same Eye Beam ability the Eye of C ' thun uses in phase one , but they can be stunlocked . They have approximately 36 , 000 HP and , again , there appears to be no cap on the number of tentacles that can be spawned simultaneously . As with their small version , they are susceptible to counterspell , deathcoil , distracting shot , gouge or stuns . During phase 2 , the whole raid is packed together to bring down the tentacles fast , so they are vulnerable to Eye Beam . Therefore , killing and stun - locking Giant Eye Tentacles is a priority . The stomach of C ' Thun is an entirely separate room . Every 10 seconds , a tentacle will emerge and swallow a random person in the raid . You fall from the top of the new room into green water , and are given a stacking debuff called Digestive Acid that does a hefty amount of nature damage . The debuff reapplies itself about every 4 seconds , and can stack multiple times ; after 20 seconds of being inside the stomach , you will have about 5 debuffs . One application does 150 damage every 3 seconds and stacks up to 99 times , it is also noted that this damage is NOT mitigated by any resistances such as Aspect of the Wild . You can swim out of the green water to one of three small landmasses . One of the landmasses has a blackish circle on it which throws you up out of C ' Thun and back to the surface ; you can use this to exit at any time . Move to this island and stay near the exit point while your health allows . Nature Resistance potions help to increase the time you can be inside the stomach . Note that if you don ' t position yourself at the center , you will be bounced against a wall and killed . There are two Flesh Tentacles in the stomach which have about 25 , 000 HP each and a melee attack . Killing the Flesh Tentacles weakens C ' Thun , causing it to turn purple and become vulnerable for 45 seconds . During those 45 seconds you may bring C ' Thun down by roughly 1 / 2 of its hp with all raid alive . If there is a Giant Claw alive , don ' t stop tanking it . At the end of this phase , C ' thun regains its shield and the Flesh Tentacles respawn in his stomach . During the weakened phase , C ' Thun doesn ' t spawn any more tentacles . 10 seconds after the weakened phase ends , C ' Thun spawns a Giant Claw Tentacle . You may want to synchronize the death of the Flesh Tentacles on the stomach with the death of a Giant Claw on the surface , so you don ' t have a couple of Giant Claws alive at the end of the weakened phase . C ' thun at 110 . At level 110 , the C ' thun fight becomes much more simple and is easily solod . 1st phase , just burn C ' thun , kill any tenticles during transition . If you are fast enough you will be able to kill C ' thun before anything else happens . For phase 2 , run around the chamber and kill tentacle spawns . When 2 manning the boss , make sure to designate which player is killing which tentacle in the stomach . ONLY KILL ONE at a time , then exit the stomach . Let the next player kill the other tentacle to weaken C ' thun . It should only take 2 weakened phases in order to down the Old God . Additionally , staying in the stomach room for too long WILL kill a level 85 . DPS the Flesh Tentacles down and GET OUT . Again , make sure to stand directly in the center of the center platform . After you have killed him , be sure to turn in the Eye of C ' thun at the NPC that is directly behind you , down the hallway to the right exiting the chamber , for easy reputation and some epics that very few people in the game will have . Quotes . Sound scripts . See " Sound Files of Kalimdor : C ' Thun "