• Pulsing Spellshield
• Item Level 219Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when picked up
  
• Shield
• Off Hand
• 7802 Armor
• 218 Block
• +45 Stamina
  +45 Intellect
• Durability 120 / 120
• Requires Level 80
• Equip: Improves critical strike rating by 42.
  Equip: Improves haste rating by 34.
  Equip: Increases spell power by 69.
• Sell Price: 14 14 44

Source

This item drops from XT-002 Deconstructor in the 10-man version of Ulduar.

Patch changes

• Patch 3.1.3 (2009-06-02): "The stats listed in the tooltip for this item were incorrect and have been adjusted. This item provides 69 spell power, 34 haste rating, 42 critical strike rating, 45 intellect, and 45 stamina." 
  
• Patch 3.1.2 (2009-05-19): Stats changed. 
  
• Patch 3.1.0 (14-Apr-2009): Added. 
  

External links

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