Power Reaper

Death Perception is why the gear can sit on Berserker's and Marauder without buying precision: the crit chance comes from the trait, and the crit damage lands while you are in Reaper's Shroud. Reaper's Onslaught adds ferocity and quickness in there and shortens your shroud cooldowns off Life Reap, while Soul Eater pays you back in health for every hit you land up close. The chill chain underneath is the rest of the build — Shivers of Dread turns the fear you inflict into chill, Cold Shoulder makes chilled foes take more strike damage from you and deal less to you, and Chilling Nova spreads chill again off your crits. Note what Speed of Shadows actually does: it fires when you enter shroud, giving swiftness and clearing movement conditions — it is an entry tool, not an escape.

Deadeye is flat power, ferocity and precision, which is all this build wants — nothing on the bar cares about boon duration. The Berserker's/Marauder split is your vitality dial: more Marauder if you keep getting caught outside shroud, more Berserker's if the group holds. Two Force and Fire are straight damage, Bloodlust stacks power off kills. Fireworks only triggers on weapon skills with a 20-second recharge or longer, so on this bar it means Nightfall and Grasping Darkness — keep them in the rotation, not saved.

You have to be standing in it for any of this to work. You are not without Stability — Infusing Terror sits on the shroud bar and "Chilled to the Bone!" hands you some for every foe you freeze — but it is yours, it is short, and it does not cover the squad.

In a ranged trade where nobody commits, Greatsword never gets to swing and your shroud bar drains to nothing. Take Scourge and put the damage where the fight is instead of walking to it.