One especially cool change from the slow, grindy levelling-up of the Nintendo games is that in the Pokmon TCG, Pokmon can evolve during each battle by playing the right cards to replace basic starters with their more advanced evolved forms
Show off your style with the Pokmon TCG: 30th Celebration Battle Decks
But those cards, and similar ones introduced since, were all bound together by one specific mechanic: they had the keyword action transform, meaning that you could swap back and forth by paying a cost and flipping the card over
The reason I put in these early bids was that I knew I would not be able to watch the auction close in real-time
Usually this is a traditional foil card with a borderless, Ninja, Samurai, Phyrexian, soft glow, or extended-art treatment, but occasionally you'll open a foil-etched rare or mythic rare, or even a neon ink foil