Yes! Magic: The Gathering Arena is coming to Android this month. No! My Pixel 1 won’t run it.
Specifically, MTG Arena arrives in on Android on 28th January. Sadly, there doesn’t appear to be an equivalent iOS release. However, the game eventually be released in full for iOS, alongside Android, “later this year”.
If your Android device can handle the game, you’re free to join in. Doing so is no more complicated than downloading the app from the Google Play store. Google has an Android early access walkthrough if you need a pointer.
Your device will need to be pretty new, though. Think Pixel 3 or Galaxy S9 (compared to my Pixel 1, they’re cutting edge). There’s a full list of supported devices on the MTG Arena website, and some techy specs if you understand that kind of thing.