• Relentless Gladiator's Cord of Salvation
• Item Level 245Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when picked up
  
• Cloth
• Waist
• 186 Armor
• +115 Stamina
  +51 Intellect
  +59 Spirit
• Blue Socket
• Socket Bonus: +5 Spell Power
• Durability 60 / 60
• Classes: Priest, Mage, Warlock
• Requires Level 80
• Requires personal and team arena rating of 1250
• Equip: Improves your resilience rating by 67.
  Equip: Increases spell power by 109.
• 

Source

This item drops from Koralon the Flame Watcher in the 25-man version and Toravon the Ice Watcher in the 10-man version of Vault of Archavon.

This item is also sold by the following vendors for 34,100 :

•  Captain Dirgehammer <Apprentice Armor Quartermaster> in Stormwind City
•  Sergeant Thunderhorn <Apprentice Armor Quartermaster> in Orgrimmar

Patch changes

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

External links

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