How does battlefield selection work at the start of the game?

Ruling: Battlefield selection depends on the number of players and match format. In Best of 1 (Bo1), players select battlefields at random. In Best of 3 (Bo3), each player selects which battlefield to use each match (cannot repeat battlefields in subsequent matches of the same round).

Sequence:

• In 1v1 Bo1: Both players select a battlefield at random, and both are used
• In 1v1 Bo3: Each player selects which battlefield to use each match
• In multiplayer (2v2 or 4 players): Apply Bo1 ruleset (random selection), but the first player removes their battlefield from the game, resulting in 3 battlefields in play
• Selected battlefields are placed face up on the battlefield zones before drawing 4 cards

Nuances:

• In 4-player games, only 3 battlefields are used, so the first player does not provide a battlefield
• The same rule applies to 2v2 format