https://us.battle.net/account/manage...DAYS_PROMOTION


Apparently it is only good for accounts that are active, whether that is intended or not. Elvine posted about it on Facebook which is where I found the link. It just adds 7 days of game time to your selected account (assuming you have more than 1 account linked to your battle.net).


For further proof my account didn't get hacked:

I'm bad at the dispelling and Klik is bad with any sort of angles.