Helmet: Reaper stat. Only source for +2 Reaper stat bonus.
Offhand: Alchemical. Only source for +2 Alchemical Wisdom.
Gloves: +2 Sacred. Gloryborne. Only (remaining) source for +2 Sacred DC. (Other is a staff, can't use with Alchemical.)
Bracers: +14 Wis & + 2 Quality. Band of Diani ir'Wynarn (Artifact). Only (remaining) source for +2 Quality DC. (Other is Gloves, conflicts with Gloryborne.)
Goggles & Cloak: Magewright set. Only (remaining) source for +3 Artifact DC & +3 Artifact stat. (Other sets conflict with Bracers or Gloves [Sharn sets], or just use way too many useless gear slots [6-piece Autumn] or too many augment slots [6 augments for Wis & DC].)
Rings: +5 DC & +3 Insightful. Bound Elemental Ring of Lightning & Clouded Dreams. Only (remaining) sources for +5 DC and +3 Insightful DC. (Rest conflict with gear above.)
Necklace: +2 Profane DC. Winter Court Necklace or Alchemist's Pendant. Wow, two choices...but both are on Necklace. (Rest conflict with gear above.)
Trinket: +6 Insightful Wisdom. Blood of Blossoms or Freewill.
Weapon: +6 Evocation. Dusk the Light Descends or Lightning Coil. Only choices that give you more DC.
Still need +3 Quality Wis, available on Belt or Boots. Fill those slots and Armor, sprinkle in all the appropriate augments, and call it a day.