It could be argued that the cards which have surfaced from the 2009 contest were extra copies that made their way out of the printing room and onto various auction sites (that has apparently happened recently in the case of the Art Academy Primal Kyogre EX card, where the winner still has all 100 of their cards yet extra copies have been sent in to PSA)
Black-White decks, for instance, might enjoy the lifegain from Fumigate, or the reanimator-enabling Living Death or Lifes Finale
It's been confirmed that the first two BWRs will be Full-Art cards of Reshiram and Zekrom, adorned in their black-and-white color scheme
Putting into play and casting without paying its mana cost are different things even though they seem very similar
Being able to grab those cards, or a Kellogg to spend your accrued treasure, is a really nice play, and itll get better the more Mercenaries you can slot in such as the new Rakdos, if you extend your budget