• Pattern: Knightbane Carapace
• Item Level 85Disenchants into:
  Not disenchantable
• Races: Orc, Undead, Tauren, Troll, Blood Elf, Goblin
• Requires Leatherworking (450)
• Use: Teaches you how to make Knightbane Carapace.
• [Knightbane Carapace]
• Requires Heavy Borean Leather (24), Eternal Shadow (20), Arctic Fur (8), Crusader Orb (8)
• Sell Price: 2 50

Source

This item has an extremely low chance of dropping from any boss in 25-person Trial of the Crusader, 10-person and 25-person Trial of the Grand Crusader.

Patch changes

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

External links

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