https://magic.wizards.com/en/articles/archive/magic-digital/mtg-arena-streamer-events-playing-friends-2018-10-25
Step one in giving you ways to play with friends is Direct Challenge. Seriously, we're building it right now and we know it can't come fast enough. It's coming soon. How soon? "Hopefully" November.
Here is how Direct Challenge will work:
1. You and your friend open the Direct Challenge option.
2. You type in each other's username and five-digit code.
3. You hit "Battle."
4. You play a match against each other.
允许玩家与好友对战的第一种方式是直接挑战。正经点说，我们现在正在构建这种方式，并且我们知道那不会很快完成。很快就会有的。多快？“希望是”11月。
直接挑战的运作方式：
1. 你和你的好友打开直接挑战选项。
2. 你们输入彼此的用户名和五位数字识别码。
3. 你们点击“战斗”。
4. 你们与彼此对战。