|The subject of this article was removed from World of Warcraft in patch 7.0.3.
Multistrike was a secondary attribute introduced in Warlords of Draenor that provided a chance for spells and abilities to fire up to two additional times, at 30% effectiveness (both damage and healing).
In PvE, character spells and abilities had two chances to deal an additional 30% damage. Each hit could offer up to 100% + 30% + 30% = 160% total damage.
In PvP, character spells and abilities had one chance to deal an additional 30% damage. Each hit could offer up to 100% + 30% = 130% total damage. Multistrike was exactly half as valuable in PvP, point for point. 
For example, a character might cast a against its target, hitting for 1000 damage, and then score a multistrike, causing a second Frostbolt to hit the target (with no additional mana cost or casting time) for 300 damage. In other words, sometimes the ability would hit just once for normal damage; sometimes it would hit twice, with the second hit dealing 30% damage; and occasionally it would hit three times, with the second and third hits each dealing 30% damage. Multistrikes didn't "Double dip" into stats like Versatility or Mastery, so if a character had 10% Versatility and their hit for 1100, the Multistrike would hit for 330 (as apposed to 363 if it gained the benefit twice).
Multistrikes crit independently of the main attack. That is, the main attack did not have to crit in order for the multistrike to crit. As seen on the attack table, assuming the character currently had 20% crit chance and 10% multistrike chance, each multistrike roll would look like this:
|Crit||2.0%||.000 – .001|
|Multistrike||8.0%||.002 – .009|
|None||90%||.010 – .099|
- Only the initial attack could generate procs.
- For Direct attacks, Multistrike was decided upon cast, not when the attack landed.
- Damage Over Time spells could multistrike, with ticks getting two chances just like a direct damage spell. This also applied to combination spells like and : the direct damage components could multistrike, and so could each individual tick. 
- In PvP, multistrike would only ever proc once.
- Ignite ticks couldn't multistrike. However, if a spell that could contribute to Ignite damage scored a multistrike, its additional hits would also contribute Ignite damage.
- Patch 7.0.3 (2016-07-19): Removed.
- Patch 6.0.2 (2014-10-14): Added.
- ^ Celestalon 2014-12-11. That's a mix of old and wrong info. Correct is simple: X% Multistrike = one X% roll in PvP, two X% rolls in PvE.
- ^ Celestalon 2014-04-19. Yes, DoT ticks can Multistrike..
- ^ Celestalon 2014-04-16. Multistrikes of your other spells can add to your Ignite DoT, yes. Ignite itself cannot Multistrike. (You can benefit once)..