Powerful cards that will turn the game around eh? Just like lost link with their ridiculous instant win card and lost zone prowess? Good thing my decks are mostly powered by printed out proxy cards or I will cry with spending all that money for decks that may be made obsolete by the upcoming sets.
I am surprised with the two new LEGEND cards I was expecting legendaries with 680 base stat and above to have a solo LEGEND feature just like Ho oh and Lugia but I guess combining them makes them more useful, maybe.
Palkia and Dialga LEGEND - Interesting, maybe it would have a move called space and time continuum.
Deoxys and Rayquza LEGEND - As with any recent Rayquaza's I am expecting a move which does 150 or 200 (maybe more) damage, requires a lot of energy and discards them. Not sure with what to expect from a Deoxys card, maybe some form changing.
Celebi prime? Maybe Celebi is not too popular a legendary to deserve its own LEGEND card. I doubt Arceus would be featured beside any other legendary and I am quite sure it would get its solo LEGEND cards in a future set.