The 9-Pocket Duelist Portfolio also utilizes an anti-slip feature to keep cards secure and your collection safe at all times
A mana base can be simple (say, seventeen Plains in an all-white, 40-card deck) or it can be quite complex: featuring multiple colors of mana, lands with unusual abilities, and indirect methods of making mana (via artifacts, creatures, or spells)
Binders can even be used to hold a large number of cards, as long as you get one that's big enough
Not directly synergising with the deck
If its an item card, you may play that item for free and they enter play exerted
Pokmon Pocket takes gameplay-optimizing lessons from Marvel Snap, condensing matches into delightful, 10-15 minute affairs by cutting the deck size by two-thirds and automating how energy works - which is impressive on its own