Not sure if this will be a reliable way to do so, but it seems worth looking at
In the case of the Pokemon Sword & Shield TCG expansion, the card game is mirroring its video game counterpart almost identically: the set, from its design to its rule changes to the way aesthetics have changed, is one of the most important ones released in recent memory
Additionally, Athreos can return itself to the owners hand if it ever dies
I do wonder if such a thing might be more palatable at a slightly more reasonable cost #9: Mother of Runes Mother of Runes is just out of this world compared to almost any other one-drop in the games history
Their iridescence is really great to look at (granted, for early EX, like @wisewailmer said, they really have to be pretty much mint to look really good)
Then, there was a tournament that featured this deck: The basic idea was simply that you find your single Megrim with your tutors and use your fast mana to cast a Memory Jar