Ambush

Ambush is a powerful instant attack a rogue can perform while stealthed and behind the target. Ambush is learned at level 8 for.

Improvements

 * Shadowstep increases the damage of your next Ambush within 10 seconds by 30%.
 * Improved Ambush increases the critical strike chance of Ambush by 20/40/60% and its damage by 5/10/15%.
 * Waylay gives Ambush a 50/100% chance to unbalance a target, increasing the time between their melee and ranged attacks by 20%, and reducing movement speed by 50% for 8 sec.
 * Opportunity increases the damage dealt with Ambush by 10/20/30%.
 * Initiative gives a 50/100% chance to add an additional combo point to your target when using Ambush.
 * Find Weakness enables Ambush to reveal a flaw in your target's defenses, causing all your attacks to bypass 25/50% of that enemy's armor for 10 sec.
 * Slaughter from the Shadows reduces the energy cost of Ambush by 7/14/20.
 * Shadow Dance allows you to perform Ambush out of stealth for 6 seconds.
 * Master of Subtlety increases damage by 10% during stealth and for 6 seconds afterward.
 * Glyph of Ambush increases its range by 5 yards.

Tips

 * Very effective in taking out cloth-wearing targets quickly.
 * Ambush is arguably preferable over Cheap Shot in PvP as an opener against mages, as a mage's Blink ability is usable while under a stun effect.
 * A critical hit with an Ambush followed by an Improved Sinister Strike (or a well-timed Backstab) can put an enemy at a severe health disadvantage from the beginning of the fight, in addition to starting you off with 2-3 Combo Points.
 * Use Distract in PvE if you are having trouble getting behind a target to line up an Ambush.
 * A quickly-executed "Ambush -> Vanish -> Ambush" combo attack can inflict severe damage on any single target with the correct enhancing talents.