Well, if you just want to admire the cards, there's scryfall: https://scryfall.com https://scryfall.com https://scryfall.com/sets https://scryfall.com/sets I

Well, if you just want to admire the cards, there's scryfall: https://scryfall.com https://scryfall.com https://scryfall.com/sets https://scryfall.com/sets If you want to play in the computer, there are several free and open source implementations. I don't have any great recommendation, but I'll just point out that I sometimes play around with XMage (http://xmage.de/ http://xmage.de/) when I feel like whacking around the AI a bit. Too bad it is so unstable and crashes a lot :(