With the release of Pokmon: The First Movie in 1998, Mew and Mewtwo were both catapulted to household name status, and have since gone on to play key roles in a variety of Pokmon storylines and titles
Here are some other name combinations to try, as I found here: SD01
Make use of and get in a game-winning attack
Despite his incredible rarity, gameplay-wise MetalEtemon is just a Vaccine-type recolor of normal Etemon with the exact same movepool
Then, not even a year later, two top meta decks come out that annihilate the competitive landscape and have easy access to an extremely strong level seven Digimon without even needing to get a level six on the field
One of the most powerful of these long-lasting staples that could find a home even in the decks of today would be the regular side-deck and tech card Skill Drain, whose powerful effect can negate all face-up monster effects on the field for the cost of just 1000 life points