Firstly, you get a loot card-and scratch it..
Type/ redeem at : wowtcg.com/loot
MUST follow 4 steps:
1.Select your Game Region
2.Select your Realm
3.Enter your Promotion Code
4.Print out or write down your in-game code
Then log into the game and travel to Booty Bay in Stranglethorn Vale. There, you will need to find a goblin by the name of Landro Longshot. He usually hangs out by the docks. Try asking other players in town if you're having trouble finding him. When you find Landro, he'll ask you which item your code is for; check your loot card if you're not sure which item that is. Select the item from Landro's list of available promotions, and then enter the in-game code you wrote down (you did write it down, didn't you?). If your code checks out, then Landro will hand you your reward. Congratulations - you are now the coolest player in town!/