442.1. A Showdown opens at this time.
442.1.a. Establish who is Attacker and who is Defender.
442.1.a.1. The Attacker is the player whose unit(s) applied the Contested status to the Battlefield. They gain the Attacker designation now. 442.1.a.1.a. This player gains Focus as this Showdown begins.
442.1.a.2. The Defender is the player who did not apply the Contested status to the Battlefield. They gain the Defender designation now.
442.1.a.3. Units at the Contested Battlefield controlled by the Attacker gain the Attacker designation now. 442.1.a.3.a. If a Unit controlled by the Attacker becomes present at this Battlefield after this moment, it will gain the Attacker designation during the Cleanup phase following the action that caused it to become present
442.1.a.4. Units at the Contested Battlefield controlled by the Defender gain the Defender designation now. 442.1.a.4.a. If a Unit controlled by the Defender becomes present at this Battlefield after this moment it will gain the Defender designation during the Cleanup phase following the action that caused it to become present
442.1.b. Finalize items on the Initial Chain if establishing Attacker and Defender has caused Triggered Abilities to become Pending.
442.1.b.1. The Attacking player, who has Focus , places Triggered Abilities on the Chain first, followed by all non- Defender players in Turn Order , followed by the Defending Player.
442.1.c. The State Closes if an Initial Chain was created.
442.1.c.1. Otherwise the Showdown continues, with the State Open as normal.
442.1.d. Players proceed with any play on the Chain as normal.
442.1.e. Focus does not pass upon closure of the Initial Chain, if any.