Here are two more examples to give you a taste from past years
This card is heavily played in Mardu Vehicles but the price did not stay at its high point because Vehicles is not the best deck in the format right now
Trainer cards also give you the opportunity to synergize and combo effects with your Pokmon attacks and abilities, letting you get more done on your turn than your opponent
Afterward, you can recycle them since many cards within the archetype have flashback or other ways to get put back into your hand
Mechanic cards, such as Gold Pokmon V and Gold Pokmon VSTAR, used either the Full Art, like work for Vs, or the standard linework for VSTARs, with a gold background
And it's not even that hard to run through your deck with Innistrad's focus on milling cards off the top of your library