Message from the Raven

{2}, {t}: Draw two cards. Put Message from the
Raven on the top of it's owner library.
The raven that carries a reply is not always the same
raven that was sent with the original message. For
example, if you are at Winterfell and send a raven to
Storm's End, the one who returns with a reply is not
your original raven. Instead, it is a different raven,
one that's trained to fly to Winterfell.