The land enters on that face and stays like that for the rest of the game, which means you only get access to that face's color
Being printed here does not make them Standard legal
You can use Scoop Up Cyclone to pick up a damaged Pokmon and all cards attached to it from your field, denying your opponent the opportunity to take easy Prize cards from its knockout
Trainer Trainer Pokmon cards can be explained as support roles that help boost the stats of your Pokmon, whether by healing, giving the Pokmon enhanced abilities or special effects, or giving you the player more opportunities (for example, drawing more cards or searching your deck)
Jamming all of that into a deck is likely to amount to little more than a pile of FNM jank, but its only a matter of time before something more concrete coalesces around Planebound Accomplice and sends it into a price spike
Scalpers, who purchase as many as they can with the intention of reselling them, have contributed to the chaos