• Mantle of Master Cho
• Item Level 333Disenchants into:
  [Dream Shard]: 1 (99.5%)
  [Abyss Crystal]: 1 (0.5%)
• Binds when equipped
  
• Cloth
• Shoulder
• 858 Armor
• +298 Stamina
  +199 Intellect
• Requires Level 83
• Equip: Improves critical strike rating by 133.
  Equip: Improves haste rating by 133.
• 
• Sell Price: 7 38 75

Source

Dropped by Siamat in Lost City of the Tol'vir on normal mode.

Trivia

This item's name seems to come from the "smart" head of Cho'Gall.

Patches and hotfixes

• Patch 4.0.3 (15-Nov-2010): Added. 
  

External links

• Battle.net (EU)
• Wowhead
• Thottbot
• WoWDB