Mark of Xavius increases Blackened Soul damage by an additional 6% per stack. Malevolence increases the stack count of Wither by an additional 2 stacks.
Malevolence grants 2 stacks of Tormented Crescendo and prevents Blackened Soul from consuming stacks while dealing damage 25% faster for 8 sec.
Soul Harvester
Shadow of Death unleashes your Demonic Soul to assault your current target for 9 sec, dealing (279.306% of Spell power) Shadow damage and (186.209% of Spell power) Shadow damage to enemies within 10 yds with each swipe.
Demonic Soul damage increased by 45% and Wicked Reaping damage increased by 45%. Your Demonic Soul generates 1 Soul Shard every 3 sec while assaulting enemies.