(2) Set: Your normal melee swings have a chance to Invigorate you, healing you for 90 to 110.
(4) Set: Your Backstab, Sinister Strike, and Hemorrhage critical hits cause you to regain 5 energy.
(6) Set: Reduces the threat from your Backstab, Sinister Strike, Hemorrhage, and Eviscerate abilities.
(8) Set: Your Eviscerate has a chance per combo point to reveal a flaw in your opponent's armor, granting a 100% critical hit chance for your next Backstab, Sinister Strike, or Hemorrhage.
22 
38 