The original article showcased some of the most valuable cards in Surging Sparks
Second, I will address the issue of Orcish Oriflamme - the reason the copy you linked shows up as is because the version you linked appears to be from Alpha, and Alpha had a couple of printing errors showing incorrect information, one of the more famous examples being Elvish Archers (Power/Toughness was printed at 1/2 in Alpha as opposed to the 2/1 it's been in every other edition starting with Beta)
They have also been found in Best Buy, Hobby Lobby, Michaels, Kohl's, TJ Maxx, Five Below, Party City, Burlington, and Big Lots, as well as in smaller stores like Walgreens, CVS, Rite Aid, Hot Topic, and Gamestop
Gym Leader Challenge is a fan-made format that relies on building a deck around one specific pokmon type without using more than one copy of each card
Premium foil cards are randomly inserted