Reins of the Thundering Jade Cloud Serpent

The Reins of the Thundering Jade Cloud Serpent can be purchased from guild vendors upon completion of the guild achievement Guild Glory of the Pandaria Raider for. It requires reputation with your guild to purchase.

Mount Journal
''From their infancy, Thundering Cloud Serpents are drawn to storms. They have been known to chase lightning through the blackened, roiling clouds, and to bathe in the pouring rain.''