Rogue · Subtlety · tier 5 · from level 30
Dirty Deeds
20 less energy
2/2 · Garrote
Dirty Deeds
Rank 2/2
Reduces the Energy cost of your Cheap Shot and Garrote abilities by 20, and your Garrote ability no longer requires you to be behind your target.
Averages, counting crits and misses, for a level 60 Rogue with a typical weapon and no other gear or buffs, against a target your level. Worked out from the game's own data, the same way as the Foresight addon.