A must have for every fisherman out there.
Attach the charm to yourself, granting you a chance to find additional fish from pools in Pandaria for 1 hour.
You’ll also get a buff.
This item is not so easy to get though, you need to talk to Ghostly Pandaren Fisherman. This NPC will then diseappear and the respawn time is 10 hours + according to the comments on WowHead.