- For the Battle Pet, see .
- Not to be confused with Gurtogg Bloodboil.
It deals 70% less damage in PvP.
- 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 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
- Hotfix (2016-11-14): "(Blood) Blood Boil now deals full damage in PvP (was reduced)."
- Patch 7.0.3 (2016-07-19): Redesigned and only available to Blood. Now deals damage to nearby enemies and infect them with .
- Patch 6.2.3 (2015-11-17): Damage has been increased by 10%.
- Hotfix (2015-01-12): "Blood Boil's damage has been reduced by 33.3%."
- 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."
- Patch 6.0.2 (2014-10-14): The effects of and have been consolidated into this ability.
- 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.
- Hotfix (2009-04-16): "Blood Boil should no longer penetrate or ."
- Patch 3.1.0 (2009-04-14):
- Patch 3.0.2 (2008-10-14): Added.