Something to think about for the MTG files upcoming
 

Not sure if this is really an issue, but...

In June/July there will be a set coming out named "Coldsnap". This set will technically be part of the Ice Age block, but will be legal for the Standard and Extended tournament environments, while the rest of the Ice Age block won't be. Since I don't know the programming issues, I don't know if this will pose a problem or not.