In general, I would guess its more likely to be found in a B/W deck, taking advantage of stuff like Silkwrap, or Abzan with its Charge and Anafenza (at least in Standard)
For more on this mysterious new set, Gavin Verhey will have an article coming later this week to give a peek behind the scenes of Mystery Booster 's creation and far more details on the makeup of the product
However, there aren't anywhere near as many 1st Edition Base Set packs out there as regular Base Set packs, hence the major price difference
Step up your game and impress your opponents with our Classic Art Tokens
For example, a holographic Dark Charizard card that was signed and doodled on by artist and Pokmon co-creator Sugimori was sold at an auction for over $13,000 (11,036) earlier this month
Make Them Have It/Fade If your opponent is repeatedly representing a powerful defensive card, sometimes your only real option is to call their bluff