• Eye of the Broodmother
• Item Level 219Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when picked up
• Unique
• Trinket
• Requires Level 80
• Equip: Improves critical strike rating by 87.
  Equip: Each time you cast a damaging or healing spell you gain 25 spell power for the next 10 sec, stacking up to 5 times.
• Sell Price: 11 39 40

Source

This item drops from Razorscale in the 10-man version of Ulduar.

Patch changes

•  Patch 3.1.0 (2009-04-14): Added.
  

External links

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