• Ironsoul
• Item Level 219Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when picked up
  
• Mace
• Two-Hand
  
• Speed 3.50
• 594 - 892 Damage
• (212.3 damage per second)
• +105 Strength
  +126 Stamina
• Durability 120 / 120
• Requires Level 80
• Equip: Improves critical strike rating by 69.
  Equip: Increases your armor penetration rating by 84.
• 
• Sell Price: 26 82 97

Source

This item drops from the Flame Leviathan in the 10-man version of Ulduar.

Patch changes

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

External links

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