BossNethermancer Sepethrea
Image of Nethermancer Sepethrea
Gender Female
Race Blood elf (Humanoid)
Level 69 - 82 Elite
Resource Mana
Reaction Alliance Horde
Affiliation(s) Sunfury
Location Mechanar, Tempest Keep
Status Killable
Mentor(s) Pathaleon the Calculator

Nethermancer Sepethrea is an optional boss in the Mechanar wing of the Tempest Keep. She is an apprentice to Pathaleon the Calculator and she may be in charge of the production of manacells.

Adventure Guide

Thanks to her skills at quickly summoning creatures to destroy any enemies, Sepethrea was chosen as an apprentice to Pathaleon the Calculator, the blood elf in charge of the Mechanar.


  • Inv misc head dragon 01.png  Dragon's Breath Magic Effect — Nethermancer Sepethrea inflicts Fire damage to all players in front of her, disorienting them for 3 sec. 
  • Spell frost frostbrand.png  Frost Attack — Nethermancer Sepethrea's weapon is enchanted with Frost, giving her successful melee attacks a chance to inflict Frost damage and slow the movement speed of her target for 8 sec. 
  • Spell arcane blast.png  Arcane Blast — Nethermancer Sepethrea blasts a player with magic, inflicting Arcane damage and knocking them back, reducing their total threat by half. 
  • Raging Flames — Nethermancer Sepethrea summons 2 Raging Flames when she enters combat. Raging Flames ignore threat and pursue a player for a short time. 
    • Spell fire incinerate.png  Inferno — Raging Flames surround themselves with an inferno for 8 sec, inflicting Fire damage to all players within 0 yards every second. While aflame, Raging Flames are unable to move or use abilities. When the inferno ends, Raging Flames choose a new target to pursue. 



When the fight is initiated, she summons two Raging Flames (Fire Elementals) that are immune to all forms of crowd control. They move slowly, and will chase a randomly selected target, leaving damaging trails of fire behind them. Their targets should flee, kiting them around the room. Every several seconds, the elementals will cast Inferno (like [Hellfire] except the caster does not take damage) around them, which should be avoided. After the Inferno is cast, they will randomly change to a new target.

The boss herself makes tanking difficult, as she can repeatedly disable the tank. Quick dispelling can deal with her [Dragon's Breath], anyone who gets aggro, especially if the tank is snared, will need to run to the tank.

Attempting to pull her beyond the room will reset the encounter.

A useful tactic for this encounter involves using her own slowing attack against her. When the tank is slowed by her Frost attack, he can pull her around the edges of the room at a moderate pace, maintaining enough distance from the Fire Elementals and allowing ranged DPS to unload when they can. Just be sure to keep an eye on the healer. When she disables the tank temporarily, she quickly runs to the next player on the threatlist, so be sure to recover that aggro quickly when this happens.

Be sure to avoid going down the hallway towards the Final Boss, as you may accidentally pull the waves of mobs down there, which will invariably lead to a quick wipe.


Three Raging Flames spawn, rather than two. As of 2.2.0, the elementals act like the Normal mode elementals, except that they run at 80% speed, not 50%. They will switch targets quickly if kiting is attempted. Fire resistance can be helpful, as fire damage is almost guaranteed here.

One method is to have your tank stand in the very middle of the room and have your DPS (Ranged or caster preferably) spread out into the 4 corners of the room. She will slow the tank when she hits him so the tank will only move when the fire elementals walk near him and leave the fire path/adds come near him and begin Hellfiring. This way, when the adds come the DPS immediately has distance on its side. The DPS/healer will move around the four corners, something of a throwback to the Razorgore fight. It is absolutely imperative that the DPS and healer stay within max range of the tank so that when the adds are not chasing them, they can remain static and do their jobs.

Another method used successfully (pre-patch 2.2.0) is to have your healer stand down the hallway (after having cleared the final boss) and then run in once the tank has pulled. This gives your healer a better chance of not starting out with initial aggro.

Alternatively, a method that has worked well on numerous occasions is to take 2 well geared warlocks who can cast [Seed of Corruption] on all targets and a decent paladin tank to then use [Righteous Defense]. With 3 elementals and the boss, around 1100 damage (plus damage modifiers) per mob per tick can be achieved.

Additional Notes

  • Shaman Fire Elementals can be used with a fair amount of success, being both valid targets for the spawned fire elementals, and being immune to fire attacks.
  • A well-geared Paladin is an excellent tank for the fight, as [Righteous Defense] can be vital to retrieve the boss.
  • Disarming the boss does not prevent her from using her slowing frost attack, tested 9/10/07
  • This is an encounter made for HoTs, DoTs, and instant attacks. The trick for dps is to keep moving, stay alive, and avoid getting cornered.


Normal and Heroic drops
Heroic-only drops
Holiday Drops


Don't value your life very much, do you?
Dragon's Breath
  • Think you can take the heat?
  • Anar'endal dracon!
Summoning Adds
I am not alone...
Killing a player
  • Endala finel endal!
  • And don't come back!
Anu... bala belore...alon.


Patch changes

External links