Rule 466.2.c.1

The Attacker is the player whose unit(s) applied the Contested status to the Battlefield.

• 466.2.c.1.a If a showdown opens as part of combat, this player gains Focus as the showdown begins.
• 466.2.c.1.b If a showdown was already ongoing when the combat opens, the player who has Focus maintains their Focus.

Official Core Rules