Rogue · Combat · tier 2 · from level 15

Puncturing Wounds

+98.6 Backstab

3/3 · level 60 · per cast · and 1 more

Puncturing Wounds 123

Rank 3/3

Increases the critical strike chance of your Backstab by 30% and your Mutilate by 15%, and gives Backstab a 45% chance to add an additional Combo Point.

Backstab +28.8% +98.6 Mutilate +14.4% +32.5

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.