(2) Set: Your Shadow Bolts now have a chance to heal you for 270 to 330.
(4) Set: Increases damage caused by your Corruption by 12%.
(6) Set: Your spell critical hits generate 25% less threat. In addition, Corruption, Immolate, Curse of Agony, and Siphon Life generate 25% less threat.
(8) Set: Reduces health cost of your Life Tap by 12%.