patch notes just been released actually here.........................

https://forum.marvelheroes.com/showthread.php/38394-Game-Update-Notes-6-20-2013-1-10-0-299



Duplicate hero tokens from early iterations of Doctor Doom: If you have a special hero token currently in your inventory that can only be used to unlock a hero you already own, upon login it will be transformed into a Gift Box which contains a Starter Hero you do not have unlocked. If you have unlocked all the Starter Heroes then it will contain a Fortune Card. (This fix should only apply to players who gained a duplicate token after June 4th.)



good thing I just put it away rather than using it lol