WHAT YOU NEED:
An active, non-trial Account
Social engineering skills
and perhaps a bit of photoshop (or the ability to use google to find the required image)
THIS IS A TCG BASED SCAM, THOUGH IT DOES NOT HAVE TO BE
Get on any forum for any WoW related site or selling website such as markeedragon, anywhere that you can advertise a sale of your TCG loot card CODE for in-game gold.
Make an advertisement that states something alone these lines:
-WTS TCG Lootcards Spectral Tiger, Goblin Gumbo CODE, etc. for in-game gold preferably server: (insert your server here) ABLE TO XFER for higher cost.
Now the reason you post this out of game is so that blizzard has no log of your scamming chat between you and your victim. You will get fewer responses but this provides little to no chance that they will be able to post a ticket and get their gold back and get you banned.
When your buyer adds you via MSN or AIM, or in any way contacts you, assure him with the name of the character you will be doing business with (a level 1 obviously) How you will do it (placing the information in a letter through the mail system into the Auction house for the set price) and provide him with screenshots of the loot card IN REAL LIFE.
this is where your photoshop skills or google image hijacking comes in handy.
Once you have everything set up, simply place the letter in the auction house of the server and wait for your victim to buy it. With no recollection or proof of intent to purchase a TCG loot card code, blizzard has no choice but to ignore the pleas of your victim
Thus, you keep your gold and continue to scam on.
Warning: you will have few customers and interested people, therefore i prompt you to DO YOUR BEST when it comes to providing your "legit" proof/information.