One of the only good things I got from MtG is Card Forge (https://card-forge.github.io/forge/), an open-source unofficial rule engine that also contains a desktop and a mobile app.

They allow playing a game similar to the old Shandalar from Microprose, in which you wander around a world dueling enemies (playing MtG against them), getting money and resources, and improving your deck until you can beat the big bosses.

It's one of the best ways to play the game: single-player, offline, and unofficial. Therefore you can have almost any card in existence without having to gamble with real-world money. It lets you enjoy the strategic part of the game and its meta, including deck building. The only downside is that the single-player game robs you of part of the charm, that is playing with other people.

Fascinating, thanks for the link!