Risen Nightmare's Gravemantle

2 pieces: (2) Set: Consuming Runic Power has a chance to cause your next Heart Strike to apply Ashen Decay, reducing damage dealt to you by 10% and increasing your damage dealt to afflicted targets by 20% for 8 sec.

4 pieces: (4) Set: Soul Reaper's execute damage and Abomination Limb's damage applies Ashen Decay to enemy targets, and Heart Strike and Blood Boil's direct damage extends Ashen Decay by 1.0 sec.