Patch 6.0.2 (2014-10-14): Removed. Effects have been merged into baseline Bloodthirst.
Patch 5.2.0 (2013-03-05): Now reduces the Rage cost of [Wild Strike] by 30 (was 20), and its duration has been increased to 15 seconds (was 10 seconds).
Hotfix (2012-10-01):Wild Strikes that consume the last charge of Bloodsurge will now properly cause a one second global cooldown, rather than a 1.5 second global cooldown.
Patch 5.0.4 (2012-08-28): Now a level 50 ability (was a tier 5 Fury talent). Redesigned. Your Bloodthirst hits have a 20% chance of lowering the global cooldown to 1 sec and reducing the Rage cost by 20 of your next 3 Wild Strikes.
Old: Your Bloodthirst hits have a 10% chance of making your next Slam instant, free, and deal 20% more damage for 10 sec.
Patch 4.0.1 (2010-10-12): Moved from tier 8 to tier 5. Redesigned. Your Bloodthirst hits have a 10/20/30% chance of making your next Slam instant, free, and deal 20% more damage for 10 sec.
Old: Your Heroic Strike, Bloodthirst, and Whirlwind hits have a 7/13/20% chance of making your next Slam instant for 5 sec.
Patch 3.2.0 (2009-08-04): Notification that Slam has become instant now appears in floating combat text.
Patch 3.0.8 (2009-01-20): Now has a chance to trigger from any hit with Heroic Strike, Bloodthirst, or Whirlwind.