Deck Construction Decks consist of 100 cards, with no more than one copy of any card except basic lands in a Commander deck
If your main goal is to make Legacy more affordable and accessible, however, there are other, better, easier ways to do it that dont involve fighting against WotCs seemingly unbreakable oath
At the very least, its an excellent blue commander to introduce new players to mono-blue, and its play patterns of nobody at this table will ever do another thing without my permission with a tangible reward of drakes
It's quite a feat to collect these since they do not have their own box, and come in beyond boosters, collector boosters, and bundles
Focusing on your core strategy also helps inform the kinds of cards you need in your deck