Blood Boil
Blood Boil 1 Blood Instant Boils the blood of all enemies within 10 yards, dealing X Shadow damage. Deals 50% additional damage to targets infected with Blood Plague or Frost Fever.
Usable by
Class	Death knight
Properties
Type	Offensive
School	Shadow
Cooldown	(GCD 1 sec)
Level required	56
TCG image

• Blood Boil
• 1 Blood
• Instant
• Boils the blood of all enemies within 10 yards, dealing X Shadow damage. Deals 50% additional damage to targets infected with Blood Plague or Frost Fever.

Blood Boil is a death knight AoE damage spell available at level 56. It causes additional damage to diseased targets. Unlike Death and Decay, Blood Boil does not generate any Runic Power when used outside of combat.

Modified by

• [Roiling Blood] (talent)
• [Scarlet Fever] ( blood spec ability)
• [Reaping] ( unholy spec ability)

Tips and tactics

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

Notes

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. This is still an effective method of boosting Blood Boil's damage, however Blood Boil can now be used to do some damage even to undiseased enemies. Using Blood Boil in this fashion is primarily useful when tanking or for killing swarms of low-health targets.

Patch changes

• 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 Ice Block or Divine Shield. ^[1]"
  
• Patch 3.1.0 (14-Apr-2009):
  • 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 damage radius has been decreased to 10 yards. 
    
• / Patch 3.0.2 (14-Oct-2008): Added. 
  

References

External links

• Wowhead
• Thottbot
• WoWDB

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