Were you looking for Pattern: Drums of Restoration (Horde)?

• Pattern: Drums of Restoration
• Requires Leatherworking (350)
• Requires Kurenai - Honored
• Use: Teaches you how to make Drums of Restoration.
• [Drums of Restoration]
• Requires [Heavy Knothide Leather] (6) [Nether Dragonscales] (4)
• 1 Charges
• Sell Price: 4
• Vendor 16

Source

As of Patch 2.3, this pattern no longer appears as a world drop and can now be obtained from the Kurenai faction vendors with honored standing.

External links

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