• Plans: Mithril Spurs
• Requires Blacksmithing (235)
• Use: Teaches you how to make Mithril Spurs
• [Mithril Spurs]
• Requires Mithril Bar (4) Solid Grinding Stone (3)
• 1 Charges

Source

This is a random world drop.

External links

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