[Enrage] Gives a 3/6/9% chance to become enraged, and therefore able to use this ability, every time you hit with a melee weapon.
Tips and tactics
This is an extremely powerful ability, and should be used whenever possible. It can only be used when Enraged, so you may want to use abilities to Enrage yourself if an Enrage buff isn't already on. Its 6 second cooldown makes it an easy ability to use in a rotation, if you keep Enrage effects up.
Patch 4.0.3a (2010-11-23): Now does 110% weapon damage, down from 150%.