• Titan-Forged Rune of Cruelty
• Item Level 213Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when picked up
• Unique
• Trinket
• Requires Level 80
• Equip: Improves critical strike rating by 95.
  Use: Removes all movement impairing effects and all effects which cause loss of control of your character.

Source

Sold by Wintergrasp Quartermasters (Knight Dameron, Stone Guard Mukar) for 25

Patch changes

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

External links

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