Power Necromancer

Path of Corruption and Plague Sending are the reason to run Curses: shroud skill 2 also converts the enemy's boons into conditions, and your first attack after entering shroud transfers the conditions sitting on you back onto them. That second one wants conditions on you to work — which is what Plaguelands gives you, since it bleeds you when you cast it. Lingering Curse is the weakest of the three on power gear: what you actually get is Feast of Corruption becoming Devouring Darkness, which corrupts boons off everything around your target. Spite and Soul Reaping underneath supply the same Spiteful Spirit and Death Perception backbone as the elite specs.

Dragon's and Berserker's under Scholar — flat power and ferocity, with the vitality on the Dragon's pieces buying you the margin to stand in return fire. Nothing is spent on condition damage: the corruption is utility, not your damage. Nullification strips a boon off flanked foes and Absorption steals three when you interrupt — Devouring Visage on Sword is your fear and the interrupt that pays it. That same skill is the only thing on the bar with a 20-second recharge, so it is also the only weapon skill that can trigger Fireworks.

There is no burst here. Death Shroud damage is not what you are bringing; you live on Ghastly Claws, well placement and corruption, and against a group that ignores all of it you have no answer.

If you want to be the one landing the hit, take Reaper or Ritualist. This build also carries no Stability and no stun break, so it is only safe behind the line.