Kalecgos ( tactics ) Kalecgos is the first boss in the Sunwell Plateau raid . This highly technical fight takes place in two different realms at the same time . In the normal realm the players face Kalecgos the dragon , while in the spectral realm Sathrovarr the Corruptor and Kalec , Kalecgos ' half - elf form , fight for control over the dragon . The battle is won when Sathrovarr and the dragon are both subdued , and it is lost when Sathrovarr kills Kalec . Roughly every 30 seconds , an opportunity presents itself for players to change realm . A solid rotation has to be worked out on who switches when to the spectral realm . Even after the HP reduction of Patch 3 . 0 . 2 , Kalecgos is not a trivial fight . Abilities . Kalec . This is Kalecgos ' half - elf form in the spectral realm . Preparation . The whole raid basically needs Tier 6 ( BT / MH ) quality gear . All raid members should have 10k HP or more . Some amount of arcane resistance ( about 120 buffed , e . g . Violet Badge plus Cloak of Arcane Evasion with enchant ) helps to control the damage from Arcane Buffet . Tanks need a good supply of Ironshield Potion s . Melee damage dealers can use Elixir of Demonslaying , as dealing high damage to Sathrovarr is crucial . Arcane Resistance . Here is a spreadsheet which illustrates the value of Arcane Resistance in this fight and breaks down the damage mitigation . The noteworthy Arcane Resist pieces can be found at this link : The best ones to consider for your raid are the Cloak of Arcane Evasion , Violet Badge , and the crafted boots found at the link above if people don ' t want to grind the massive Karazhan quest chain . Below is some explanation of how Arcane Resist interacts with the mechanics in the fight . Kalecgos ' Arcane Buffet spell is binary . This means that you either resist the spell entirely , or you don ' t resist anything . In contrast , a non - binary spell can have a % of its damage resisted in steps of 0 % , 25 % , 50 % , 75 % , and 100 % ( Steps were changed in WotLK to 10 % , 20 % , 30 % . . . etc . For the remainder of this discussion we are assuming TBC mechanics ) . For example , if a non - binary fire spell hits you for 1000 damage , then you have a chance based on your fire resistance to resist 0 damage , 250 damage , 500 damage , 750 damage , or 1000 damage . Now let ' s say that the a binary fire spell hits you for 1000 damage . You will either resist the entire spell ( 1000 damage resisted ) or resist nothing . Kalecgos ' Arcane Buffet stacks a debuff on players that increases the damage of the next Arcane Buffet by ~ 500 damage . This means that resisting 1 Arcane Buffet means that you are also avoiding 1 stack of the debuff . So if you resist just 1 Arcane Buffet , you are not only mitigating the damage from that individual Arcane Buffet , but you are also mitigating an additional 500 damage from each subsequent Arcane Buffet until you are ported . Let ' s look at an example : Say Kalecgos casts 10 Arcane Buffets and you have 0 Arcane Resistance . You will take 500 + 1000 + 1500 + 2000 + 2500 + 3000 + 3500 + 4000 + 4500 + 5000 = 27 , 500 damage . Now , let ' s say that you get some arcane resistance and you manage to resist the very first Arcane Buffet . Since you do not get the stacking debuff from the first Arcane Buffet , you end up taking 0 + 500 + 1000 + 1500 + 2000 + 2500 + 3000 + 3500 + 4000 + 4500 = 22 , 500 damage . Similarly , let ' s say you resist the very last Arcane Buffet . In this scenario , you will take 500 + 1000 + 1500 + 2000 + 2500 + 3000 + 3500 + 4000 + 4500 + 0 = 22 , 500 damage . What this means is , the first time you resist an Arcane Buffet , you are effectively resisting 5000 damage no matter which Arcane Buffet you resist . As you can see , a measly 10 % arcane resistance is mitigating an average of 18 . 18 % of the total arcane damage . This is very effective . Now let ' s look at an example where you resist more than 1 Arcane Buffet . Example : You resist the first two Arcane Buffets out of 10 . In this scenario you take 0 + 0 + 500 + 1000 + 1500 + 2000 + 2500 + 3000 + 3500 + 4000 = 18000 damage . Notice here that the second Arcane Buffet that you resist actually only mitigates 4500 , while the first Arcane Buffet resist mitigates 5000 . This means that as you resist more Arcane Buffets , each resist mitigates less damage than the last . This creates a polynomial distribution . Through this example , you can see that just 20 % Arcane Resistance is on average mitigating 34 . 5 % of the arcane damage . This is huge ! The stacking debuff mechanic makes every resist so much more valuable since you do not get a stack of the debuff when you resist . Strategy . Portal rotation . The key to this fight is to set up a proper portal rotation routine . Due to the enrage mechanic , Sathrovarr and Kalecgos need to be brought down nearly simultaneously . Usually , Sathrovarr ' s health drops slower than Kalecgos , therefore it ' s crucial to make good use of the portals . The basic idea is to divide the raid into either three or four logical groups , and if any member of one of these groups gets ported by the dragon , all other members of that group follow immediately . Additionally , one tank or an extra healer usually go with each group . The portal groups should consist of an even mix of DPS and healers , and each group must contain at least one decurser . In theory , each portal can be used by up to 10 players before it expires . Due to practical problems , it ' s better to reduce the group size while learning the encounter to 5 , so that only 6 people have to use each portal - this results in four groups . With practise , it ' s possible to increase the group size ( and thus the damage dealt to Sathrovarr ) so that 8 people use each portal , resulting in three groups . Because the teleports take place in a random fashion , it ' s not possible to assign the tanks ( and the free agent ) to fixed groups . Depending on which raid members get ported , the assignment of tanks to portal groups is dynamic . If any raid member not assigned to a portal group ( e . g . a tank ) gets ported , one of the groups without the debuff must react quickly and follow , else that portal is lost , the raid takes increased damage from Arcane Buffet , and DPS on Sathrovarr are low ( such a situation usually eventually leads to a wipe ) . The three tanks set up their own rotation : In principle , tanks go to the spectral realm whenever they can , and each tank which enters a new realm immediately takes over the mob there . The only exception is that the 3rd tank passes on the 2nd portal . Four group setup . Using a four group strategy is simplified by using the five man group structure . There are four portal groups of 5 raid members each , while the last group consists of three tanks , one " free agent " and one raid member who joins the group which takes the second portal . The free agent should be a healer who tries to balance healing across realms , going where healing is needed most ( usually this results in spending as much time as possible in the spectral realm ) . The last raid member should join the group using the 2nd portal because that one is not used by a tank . One member of each of the four portal ( = non - tank ) groups can get a raid icon , to simplify identification . Whenever a raid member is ported , he calls out on Teamspeak which group should use the portal . A sample four group setup can look like this : Three group setup . When using this strategy , three groups of 7 raid members each are pre - designated , the three tanks and one extra healer remain unassigned . The first portal is used by one tank and one of the groups , the second portal by the extra healer and one group , the third portal the third tank and the third group . From this point on , group composition doesn ' t change anymore , because on each portal only one group doesn ' t have the spectral exhaustion debuff and thus can go to the spectral realm . Positioning . After pulling , the tank should turn Kalecgos around and move him a little , to make sure that no other raid members stand in the frontal cone . Although the raid takes damage continuously , the primary focus of all healers is the tank . The logical groups which use the same portal each get a general area assigned ( like " top left " , " close in " , etc . ) , and stand loosely ( 8 yards apart ) in that area . When one group member gets ported , this setup makes sure that all other group members are close to the portal and don ' t have to search for it . Pay attention to keep enough distance between raid members so the blast damage doesn ' t hurt anybody ( most boss mods have a proximity warning built in ) . In the spectral realm , the raid should set up in a tight circle around Sathrovarr . This serves to reduce the damage from Shadow Bolt Volley , while keeping everyone close enough to Kalec for the Revitalize buff , and within Chain Heal range . Decursing . Since the curse never goes away ( it only switches target ) , more and more raid members are afflicted in the course of the fight . After some time , it is active in both realms , sooner or later , decursers do nothing but bounce curses around . Tanks should always be decursed immediately , while other raid members should keep the curse for about 15 seconds . End of combat . When either mob reaches 10 % , they both enrage and progressively increase the damage they deal . If either mob reaches 1 % , it is banished ( subdued ) and stops all actions . If Kalecgos is banished , no more portals open up , in that case Sathrovarr has to be brought to 1 % by the raid members currently in the spectral realm alone . The fight ends with victory only if both mobs are banished . In summary , it ' s a very good idea to keep their health close together , so that they reach 10 % at the same time . At that point , Sathrovarr should be brought down to 1 % first , and then Kalecgos . Wipe recovery . The fight ends in failure and Kalecgos despawns for 20 seconds if any of the following conditions are met : For wipe recovery , it ' s necessary to despawn Kalecgos . The best method to achieve this is to misdirect him to a target standing in the gazebo . A more messy method is to have one mounted player gain aggro and then run towards the gazebo , with healers in the gazebo trying to get healing aggro . After the dragon has despawned , rezzers can run in and each rez exactly one target . Rezzing two doesn ' t work , because the rez target doesn ' t have enough time to run to safety before Kalecgos respawns . At level 80 - 85 . Ideal Raid Composition : 4 healers , 2 tanks , 19 dps At level 80 and 85 , the Enrage mechanic will not do nearly enough substantial damage to a tank for it to be a concern anymore ( this does not apply to healers or dps ) . If you kill Kalecgos ' dragon form before you kill Sathrovarr he will become immune and no longer cast portals to the spirit realm . Therefore , it is required that the majority of the raid concentrates on entering the spectral realm ( through the debuff ( Spectral Blast ) or the portal ( s ) created thereafter ) and make quick work of Sathrovarr ' s hit points ( which will banish him for the remainder of the encounter ) and then focus on Kalecgos in the Physical Realm . In other words : At 85 , it is borderline required that your dps slow down or risk having to reset at the gazebo , raid members in the spirit veil are required to wail on Sathrovarr as hard as they can the moment they drop in . At 85 , it should be doable by any trio of tank plus DPS and healer , only taking care of Kalecgos ' health . " As with other dragon bosses , avoid his tail or his frontal cone if you are a dps or healer . Kalecgos ' Frost Breath can be dispelled but not necessary . "