Mutilate is a rogue ability learned at level 10 for those with the Assassination specialization. It requires two daggers to use and awards two combo points.
Patch 3.3.0 (08-Dec-2009): The tooltip on this ability will now update properly from talents which increase its damage by a percentage. In addition, the damage from this ability can now be blocked.
Patch 3.0.9 (2009-02-10): Damage will now do 20% increased damage against poisoned targets, down from 50%.
Patch 3.0.8 (2009-01-20): This ability will no longer give poisons on the off-hand weapon two chances to be triggered.
/Patch 3.0.2 (14-Oct-2008): Mutilate (Assassination) no longer requires you be behind the target.
Patch 2.4.2 (2008-05-13): Mutilate (Assassination) will no longer incorrectly appear multiple times in the combat log when used.
Patch 2.1.0 (22-May-2007): Added a new double-attack animation for Mutilate.; This ability will now always consume the Cold Blood buff when it strikes an opponent.
Patch 2.0.3 (09-Jan-2007): Using the rogue ability "Mutilate" when not behind your target will no longer initiate combat.