If that doesnt sound like the bedrock of any skilled MTG player, then I dont know what is
Because Gym Heroes is one of the few English sets where the holographic cards only exist as holographic graphic cards, this was a change that I was unsure actually happened until smpratte confirmed it later in this very thread
Rarity and Power best MTG cards is about more than just the set symbol
Rufus Shinra can creature a creature token each time it attacks, which can then be sacrificed to fuel payoffs like Judge Magister Gabranth's
My bigger concern is the fact that none of the lists seem to play more than 1-2 copies of Keen Sense these days, so there would have to be a pretty fundamental metagame change before this spec paid off
You can get them in pre-made decks, buy them online separately, or even make your own by hand for casual play