• Greaves of the Penitent Knight
• Item Level 125Disenchants into:
  [Void Crystal]: 1-2
• Binds when picked up
  
• Plate
• Feet
• 1080 Armor
• +25 Intellect
  +21 Stamina
• Blue Socket
  Yellow Socket
• Durability 75 / 75
• Requires Level 70
• Equip: Increases spell power by 29.
  Equip: Restores 9 mana per 5 sec.
• 
• Sell Price: 6 43

Source

Dropped by Kael'thas Sunstrider in Heroic mode Magisters' Terrace

Patches and hotfixes

Patch 2.4.0 (25-Mar-2008): Added 

External links

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