Lu Xun, Scholar General Hitting at #8 is this fun Thieving Magpie
The Pokmon Trading Card Game for the Nintendo Game Boy Color wasnt designed to evolve with the tabletop game it was based on let alone the rest of the sprawling multimedia franchise its a part of
Zanarkand, Ancient Metropolis Zanarkand, Ancient Metropolis either provides a cool land drop from exile after the adventure, and creating a massive creature that inherently gets +1/+1 counters is excellent late game use that green never gets tired of
Marnie belongs to a character archetype known as the tsundereone which is hugely popular among the Pokmon TCGs primary demographic
Beyond those, however, the Mentor cycle of cards exemplifies this concept fairly well
It's great for landfall decks that constantly throw lands out, and it's great for slower decks that just need to ensure they get some kind of ramp each turn