• Libram of Discord
• Item Level 226Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when picked up
  
• Libram
• Relic
• Requires Level 80
• Equip: Increases the damage done by Divine Storm by 235.
• Sell Price: 6 68 35

Source

This item drops from Razorscale in the 25-man version of Ulduar. It can also be bought for 19 from Emblem of Conquest Quartermasters in Dalaran.

Patch changes

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

External links

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