Varo'then's Brooch

• Varo'then's Brooch
• Item Level 37
• Binds when picked up
• Unique-Equipped
• Trinket
• +4 Strength
• Equip: Your melee attacks have a chance to grant 1149 mastery for 20 sec.
• Use: Charges your weapon with a small amount of Fire magic. (3 Min Cooldown)
• Requires Level 32
• "A gift from the Queen herself."
• Sell Price: 38 21 31

Source

This item drops from Mannoroth and Varo'then in Well of Eternity.

Patch changes

• Patch 4.3.0 (2011-11-29): Added.
  

External links

• Wowhead
• WoWDB