It's not a class bro. It's just an armor with lots of boosts.
The other parts of the set also has the same boosts as the armor as well.
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If you have Voucher of Nulgath(non-mem) then I suggest you hold on to that so that you could do Drudgen's new Totem farming quest.
Once you got max stacks of Totems then you could do that same quest to farm Gems of Nulgath.
Tainted Gems, Dark Crystal Shards and Diamonds of Nulgath are easy if you have Uni13 so you could do Dreadrock Gem Exchange quest.
Do it in the test server since you only need to kill 3 mobs there to complete it for some reason.