Gloom [Valkyr]

Basically everything to make Gloom work in place of Paralysis. Very Survivable, Gloom's life steal for sustain; [Streamline] for energy efficiency to maintain the effect.

I also use Arcane Energize to ensure that I can maintain Gloom over the long term, since there is no room for Hunter's Adrenaline. If you don't need it; Arcane Grace would add another layer (albeit overkill) layer of survivability and health sustain. DPS Arcanes would work here too.

Armour before Arcane [Guardian] is 2,629 with Warcry, which is 89% base Damage Reduction.