Hydromancer Thespia Hydromancer Thespia is the first boss of The Steamvault in Coilfang Reservoir . Heroic : Thespia can cast 2 clouds at a time . Heroic : Thespia can stun 2 people at once . Strategy . Hydromancer Thespia is accompanied by two water elemental adds : Coilfang Water Elemental , each with around 16 , 000 HP . The elementals can be banished . They have a volley spell that deals approximately 900 frost damage . The adds should be killed before DPS begins on Thespia . They can be brought outside of the room where Thespia resides to avoid her attacks . As of 2 . 1 . 0 , the elementals will now despawn once Thespia herself dies . Thespia will occasionally cast a Lightning Cloud which deals a large amount of nature damage per second when underneath the cloud . Typically if you ' re under the cloud for more than 2 or 3 seconds , you will die . Run from the cloud to avoid taking damage . The cloud will not always be cast on the tank ( regardless of aggro ) , so healers and ranged DPS must be ready to move if the cloud is cast above them . She tends to cast the cloud on groups of people , so keep everyone spread out as best as you can . If you have a lot of melee , expect the tank to have to kite her around the room a lot . Nature resistance gear and potions can help mitigate any mistakes , but by and large you should seek to avoid getting hit at all . Thespia ' s other ability puts the debuff Enveloping Winds on a player . This prevents the player from being able to move , which can be especially deadly when caught beneath a Lightning Cloud . ( As a bear tank , I ' ve only had this happen to me once in the time it took me to get exalted with Cenarion Expedition . Needless to say , we wiped . ) If your tank or healer goes down and you want to save a total wipe , you can drop down on the small ledge to the right of the top of the ramp leading to her room and run around out of LOS . She will stand there a little bit and then reset , saving you a walk back or running all the way to the instance door with her chasing you . Heroic . In Heroic mode , the elemental ' s waterbolt volley does approximately 1900 damage . DPS must be quick to kill the adds . The elementals can be stunned , significantly reducing the amount of damage taken before they are killed . You can also counterspell , bash , etc . their volleys . Also , Thespia casts 2 clouds at once . A warlock , although not required , makes this boss fight trivial ( especially in Heroic , when the adds melee cloth for 1 . 5 - 2k ) . Repeatedly banish one add and chain - fear the other while the rest of the party burns her down . Alternatively , a sufficiently group may choose to kill the two adds first , especially if a reliable crowd controller is not available for the fight . The tank of the group can either hold all three mobs ( which will put a severe strain on healing ) while the adds are burned down , or the tank can hold one add and the Hydromancer while the group either kites and kills the second add , or has a hybrid melee class tank and kill the second add . Another strategy uses a hunter to kite Thespia . Have the hunter park his pet as far away as possible - for example in the water on the far wall of the cavern - misdirect Thespia to the pet , and after Thespia kills the pet , the hunter kites Thespia to the entrance . This gives the group more than enough time to burn down the water elementals , and then fight Thespia by herself . Note : Thespia does not always seem to go for the hunter after killing the pet ; however , if the pet is stationed such that Thespia takes a detour to get to the ramp , just the pet can provide enough time to down at least one of the water elementals . The warrior will need to pick up Thespia on the way back while the rest of the party finishes off the second water elemental if necessary . The Vial of Underworld Loam for the quest will not drop in heroic mode . Quotes . Aggro : Lightning Cloud : Killing a player : Summon : Death :