Index -> Interface -> Casual Lobby -> Joining a Match

Player-created matches show up as Match Medallions in the main area of the Casual Lobby. Medallions that are dimmed indicate games already in progress, while other Medallions indicate matches waiting for an opponent to join.

At the right of the Medallion, you'll see the number of players in the match. Another number will appear in parentheses below this if the match has observers.

To join a match, simply click the Play button on a Game Medallion that has at least one open slot. This will bring up the Join Match dialog box.

Select which deck you'd like to use for the match. The Deck Selection defaults to the last deck you used.

Once you have made your selection, click the Join button.