Rogue · spell

Ambush

491per cast

Rank 6 · level 60 · before talents

Ambush

60 EnergyMelee Range

Instant

Ambush the target, causing 250% weapon damage plus 290 to the target. Must be stealthed and behind the target. Requires a dagger in the main hand. Awards 1 combo point.

Talents that change it, each at full ranks:

Cold Blood · with Cold Blood active +452 Improved Ambush +212 Remorseless Attacks · after a kill +188 Improved Kidney Shot · on targets stunned by your Kidney Shot +49.1 Opportunity +49.1 Malice +23.6 Hack and Slash +23.6 Murder · against Humanoids and Giants +19.6 Precision +16.4 Weapon Expertise +10.9

Averages, counting crits and misses, with a typical weapon and no other gear or buffs, against a target your level. Talents at level 60. Worked out from the game's own data, the same way as the Foresight addon.