• Attrition
• Item Level 245Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when picked up
  
• Staff
• Two-Hand
  
• Speed 2.40
• 490 - 736 Damage
• (255.4 damage per second)
• +118 Stamina
  +128 Agility
• Yellow Socket
  Blue Socket
• Socket Bonus: +6 Agility
• Durability 120 / 120
• Requires Level 80
• Equip: Improves haste rating by 97.
  Equip: Increases your armor penetration rating by 63.
  Equip: Increases attack power by 142.
• 
• Sell Price: 29 87 2

Source

This item can be found inside the Tribute Chest after defeating Anub'arak in the 10-man version of Trial of the Grand Crusader.

Patch changes

• Patch 3.2.0 (04-Aug-2009): Added. 
  

External links

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