Mary Winchester dealt with you for something didn't she?. Thats how you made Sam one of yours.
You're just taunting them with it. Taunting Sam. Begs the question, Do you want my little antichrist superstar to fulfill your plan?, whatever that was. Because you can't have failed to notice just how good he's gotten with those gifts you left him.
Remember just who you have to thank for that and consider you're pretty much all alone up here.
Your call Azazel