• Crypt Fiend Slayer
• Item Level 219Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when picked up
  
• Bow
• Ranged
  
• Speed 3.00
• 309 - 575 Damage
• (147.3 damage per second)
• +34 Agility
  +26 Stamina
• Durability 90 / 90
• Requires Level 80
• Equip: Improves hit rating by 20.
  Equip: Improves haste rating by 24.
  Equip: Increases attack power by 51.
• 
• Sell Price: 15 45 67

Source

This item can be found inside The Captain's Chest after defeating the Lich King in Halls of Reflection.

Patch changes

• Patch 3.3.0 (08-Dec-2009): Added. 
  

External links

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