Well go into the specifics in the Archetype section, but for now just know that each color pair focuses on a specific animal, and there are many many many cards that encourage you to focus on one specific animal type
Large HP, huge Retreat Cost, their attacks are rather expensive and deal quite a bit of damage
(*This card's "The name of this card/Digimon is also treated as [Numemon]" has been changed to "(Rule) Name: Also treated as [Numemon].") This is a special rule for this card that always treats it as if it also has the [Numemon] name
Legendary spells are plentiful not only from the latest Lord of the Rings set but also from deep into Magic the Gathering's history, so there are a lot of cards that you can slot into this deck that would make it powerful
Signature Move: Fusion in general is this to him, even recognized by various characters in the series like Daitokuji, Kagemaru, Kaiser, Saiou and Sho
When there wasnt a limit in beta, you could stack cards so high that it went off screen and parts of the game board would be visually blocked