If you're looking for T2 sets, you want the ones that drop in dungeons requiring 8300 GS. Look at your queue list in game. The GS requirements are right next to the dungeon's name. In your case, you want the Nether Mage's, Malevolent Warlock's, or Accursed Diabolist's sets.
Since there's not much information on the wiki for them, I suggest you search for the individual pieces under Equipment in the AH. You can inspect the items in the result set to see the stats and help you decide which set you want.
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Look at this link: http://neverwinter.gamepedia.com/Collection/Epic_Equipment_(Scourge_Warlock)#Wicked_Mage.27s_Armor
If you're looking for T2 sets, you want the ones that drop in dungeons requiring 8300 GS. Look at your queue list in game. The GS requirements are right next to the dungeon's name. In your case, you want the Nether Mage's, Malevolent Warlock's, or Accursed Diabolist's sets.
Since there's not much information on the wiki for them, I suggest you search for the individual pieces under Equipment in the AH. You can inspect the items in the result set to see the stats and help you decide which set you want.
Tier 1:
Inferno Diabolist
Devilish Warlock
Wicked Mage
Tier 2:
Accursed Diabolist
Malevolent Warlock
Nether Mage
Hope this helps!
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