• Breastplate of the Stilled Heart
• Heroic
• Item Level 346Disenchants into:
  [Dream Shard]: 1 (99.5%)
  [Abyss Crystal]: 1 (0.5%)
• Binds when picked up
  
• Mail
• Chest
• 2322 Armor
• +454 Stamina
  +262 Intellect
• Red Socket
  Blue Socket
• Socket Bonus: +20 Spirit
• Durability 135 / 135
• Requires Level 85
• Equip: Increases haste rating by 172.
  Equip: Increases mastery rating by 192.
• 
• Sell Price: 14 62 87

Breastplate of the Stilled Heart is a chest piece for Shaman.

Source

This item drops from  Commander Springvale in Shadowfang Keep on heroic mode.

Patches and hotfixes

• Patch 4.0.3a (2010-11-23): Added. 
  

External links

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