Devout Ashdevil's Pactweave

2 pieces: (2) Set: Soul Rot deals 15% increased damage and lasts an additional 4 sec.

4 pieces: (4) Set: Soul Rot grants 3 Umbrafire Kindling which increase the damage of your next Malefic Rapture to deal 50% or your next Seed of Corruption by 60%. Additionally, Umbrafire Kindling causes Malefic Rapture to extend the duration of your damage over time effects and Haunt by 2 sec.