603.7. During matches, teammates sit next to each other in their registered AB order. The setup process for a game of Riftbound is defined in the Core Rules, with these additional exceptions for 2v2:
603.7.a. Turn order is as follows:
603.7.a.1. The first team’s A player.
603.7.a.2. The second team’s A player.
603.7.a.3. The first team’s B player.
603.7.a.4. The second team’s B player.
603.7.a.5. Return to the top of the order.
603.7.b. A random method is used to decide which team selects the starting player.
603.7.c. Once the appropriate step in the core rules process is reached, the team that earned the decision chooses where within the a.1-4 turn order play begins.
603.7.c.1. For games after the first game of a match, the losing team of the previous game gets to choose who plays first. If the previous game was a draw, the turn order from the previous game is maintained.