Blood Boil

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For the Battle Pet, see  [Remains of a Blood Beast].
Not to be confused with Gurtogg Bloodboil.
Blood Boil
Spell deathknight bloodboil.png
  • Blood Boil
  • Level 56 Blood death knight ability
  • 30 yd range
  • 1 Rune
  • 7.5 sec recharge
  • Instant
  • Deals (375% of attack power) Shadow damage and infects all enemies within 10 yds with Blood Plague.
Usable by



7.5 seconds

Other information
Level learned


Related debuff
Spell deathknight bloodplague.png
  • Disease
  • Blood Plague
  • Draining (47.25% of attack power) health from the target every 3 sec.
  • Duration: 24 seconds
"There is only one way to ease the pain: death."[1]
Rantuko Grimtouch[2]

Blood Boil is a level 56 Blood death Knight area of effect damage spell that infects nearby enemies with [Blood Plague].

It deals 70% less damage in PvP.[3]


  • Prior to patch 3.1.0, Blood Boil did no damage to targets with no diseases on them. Hence one would first stack the target with diseases, then use [Pestilence] to spread them to nearby mobs and then use Blood Boil. Until patch 6.0.2 this was still an effective method of boosting Blood Boil's damage, however it could still be used to do some damage even to undiseased enemies. Using Blood Boil in this fashion was primarily useful when tanking or for killing swarms of low-health targets.

Tips and tactics

  • As a tank, Blood Boil is very useful for picking up stray mobs while your other AoE abilities are on cooldown.

Patches and hotfixes

  • Legion Hotfix (2016-11-14): "(Blood) Blood Boil now deals full damage in PvP (was reduced)."
  • Legion Patch 7.0.3 (2016-07-19): Redesigned and only available to Blood. Now deals damage to nearby enemies and infect them with [Blood Plague].
  • Warlords of Draenor Patch 6.2.3 (2015-11-17): Damage has been increased by 10%.
  • Warlords of Draenor Hotfix (2015-01-12): "Blood Boil's damage has been reduced by 33.3%."
  • Warlords of Draenor Hotfix (2014-10-15): "Blood Boil should no longer incorrectly grant Scent of Blood or Runic Power if it doesn't strike a target. Additionally, Blood Boil should no longer incorrectly cause diseases to spread back to the casting Death Knight."
  • Warlords of Draenor Patch 6.0.2 (2014-10-14): The effects of [Roiling Blood] and [Pestilence] have been consolidated into this ability.
  • Wrath of the Lich King Patch 3.1.2 (2009-05-19): If no target is available for Blood Boil to hit, the spell will now cast and consume a blood rune but generate no runic power.
  • Wrath of the Lich King Hotfix (2009-04-16): "Blood Boil should no longer penetrate [Ice Block] or [Divine Shield]."
  • Wrath of the Lich King Patch 3.1.0 (2009-04-14):
    • Damage increased to make up for [Pestilence] no longer doing damage.
    • Now does some damage to undiseased targets and extra damage to diseased targets. Its radius has been decreased.
  • Wrath of the Lich King Patch 3.0.2 (2008-10-14): Added.

See also


External links