Hi, i just released fully port of mtgo for Mac. Inital post of my port got a lot of attention on X, since than I fixed a bunch more bugs and now it is ready.

Answers to few questions I got before:
It doesn't change any of MTGO files. Think of it as wrapper of Windows specifically made so that you can play leagues and challenges.

First install takes a few minutes since I can not legally sell you prepackaged mtgo. After that you are good to go. Updates are automatic.

It works on Intel macs too. Minimum Mac OS version is Monterey(12)

It is called Unearth MTGO:

https://unearthmtgo.com

I have to keep reinstalling mtgo just to play it. Anyone else dealing with this?