Mechano - Lord Capacitus Mechano - Lord Capacitus is an optional Arcane titan boss in The Mechanar of Tempest Keep . He is likely involved in the process of creating the manacells in the Mechanar . Attacks and abilities . Head Crack : Stamina decreased by 200 , hits the tank ( i . e . aggro target ) only . Nether Bomb : Spawns a small bomb that flies around . 1500 - 3000 AoE Arcane damage when it detonates . Spawns constantly throughout the encounter . Heroic mode . Polarity Shift : Instead of the Reflective Shields , Capacitus periodically debuffs the party with a charge , similar to Thaddius in Naxxramas . Every 45 - 60 seconds , party members randomly get a ' positive ' or ' negative ' charge . Players with identical charges grouped together increase damage by 100 % . Players with opposite charges cause 2000 damage per tick to those nearby . Enrage : If not killed in 3 minutes , Capacitus enrages , causing a damage increase . Strategies . Keep Capacitus far away from the group - this is primarily a ranged DPS fight . This is especially true for rogues as your healer needs to focus on healing the Main Tank and the bombs that spawn will deal high damage . If possible , save your healer headaches and mana by using your ranged weapon . However , this is not always possible in Heroic mode if your group is heavy on melee DPS , as the fight is timed . Your tank should be prepared to move Capacitus from side to side to avoid the bombs . Ranged should be wary of bombs approaching them . The bombs themselves spawn and then move around slightly before pulsing two or three times then exploding . They are easy enough to spot and easy to avoid if everyone keeps their distance . When the boss dies , the bombs do not despawn , but will all explode ! Strategy 1 : Using the stairs for positioning . Use the stairs to decrease the number of bombs that hit ranged party members . This strategy still requires vigilance on all players ' parts - - the reflective shields the boss places will still wipe the group if ignored . Strategy 2 : Kiting . Another strategy is to use the stairs on the right side of the instance to kite Capacitus . You should engage him when he is at his furthest point away from the stairs . Strategy 3 : Using melee DPS . It is possible for melee to DPS to be useful in this fight , and while an offhealer helps , it can be done by the main healer . The tank should hold Capacitus on the glass floor that he patrols . If the tank stays in the small indent near the front - center of the glass floor and keeps Capacitus in the middle of the room , two things happen : At this point , only two things need to happen for successful melee DPS : they need to stop attacking when he glows red ( the tank should too - - do your healer a favor ! ) , and they need to keep one eye on any bombs and move out of the way if necessary . Melee should also run up off the glass and bandage so the healer can focus on the tank . Heroic . In heroic mode , Capacitus hits harder , but releases fewer bombs ( although they hit for higher damage ) . He neither changes colors nor reflects damage / magic . Instead , Capacitus has an ability called Polarity Shift , which is similar to the Thaddius fight in Naxxramas . After three minutes , Capacitus becomes enraged and it will be nearly impossible to kill him . Polarity Shift . Approximately 30 seconds into the encounter and every 30 seconds thereafter , Capacitus casts Polarity Shift on all members of the party . Each person gets either a positive or negative charge , which is visible to yourself and others as a debuff icon . The charges themselves do nothing if you are standing alone . If two people with opposite polarity stand close together , this causes damage to both members at 2 , 000 damage per tick and can easily cause a wipe . However when two people with the same polarity stand close together , the charge becomes beneficial and increases both members ' damage output by 100 % each . When you are correctly positioned with like - charged party members , the polarity icon is multiplied to indicate the increase in damage output . Strategy . Determine before the encounter starts , where ranged / casters should stand once Polarity Shift is in effect ( for example , positives on the right and negatives on the left ) . Polarity Shift is a cast , so make sure that each pending shift is called out to the party . Everyone should take a moment to check their new polarity and move immediately to the predetermined location , switching back and forth as necessary . Because the tank cannot move , rogues may need to move away if they are oppositely charged from the tank . As long as members are grouped correctly , damage output is increased so substantially that even feral - specced ( but non - tanking ) druids can shift out and cast damage spells ( thus allowing them to stand away from the tank ) . Priests : If you use your Shadowfiend while your polarity is stacked , you will do more damage and return more mana . This fight goes VERY quickly if you properly stack charges , and can easily be finished even if a party member goes down early . Notes . " Enslaved Drill Master " : A warlock can enslave a drill master when you ' re one pull away from the boss . When you have a drill master enslaved it casts a debuff that stacks on the boss reducing its armor by 100 % and increasing effective DPS . This tactic is only functional in NON - HEROIC DIFFICULTY . Quotes . Aggro : Yells : Killing a player : Death :