I just bought the whole game at Gen-Con and was told I could find the young legacy card somewhere here on the site to be able to print out since it is no longer made. But looking around I have not been able to find it.
The oversized hero cards on my site include Young Legacy: www.spiffworld.com/sotm . That may get you what you need.
If you want it to be an actual scan of the Young Legacy card, I found this over on BGG: http://files.boardgamegeek.com/file/download/8esp2omu1n/SotM_promos.pdf