Deoxys is like one of the only Legendaries I don't have. I finally get one! yesss.
Also a Dragonite with Multiscale if you signed up for any of the tournaments recently or something.
Also, if you have both Black/White and Black 2/White 2, it's likely you can get 2 of them. Like I did back when a Jirachi wifi event was released and I got one on Diamond and Soulsilver.