The 1999 Jungle set gave us the original holographic trio, Vaporeon, Jolteon, and Flareon, the cards that taught a generation of kids that Eevee could become almost anything
Several key trends have emerged
Dig Through Time Another Delve card, Dig Through Time is essentially a better Treasure Cruise for a slightly higher cost
The final ability is fairly strong, but you need something big to make it worthwhile, and that thing cant be a creature
While Magic has some cards like Etali, Primal Conqueror one could argue are cascade-adjacent, Im only including cards with the actual keyword ability (which also excludes discover cards)
The cards that consistently command the highest prices are often first editions, tournament promos, or cards tied to beloved characters like Charizard, Pikachu, and Mewtwo