If a unit is killed during a showdown and the defending player no longer has a unit there, does focus still pass to them, or does the showdown end immediately?

Ruling: Focus still passes to the defending player even if their unit dies during the showdown. Showdowns only end when both players pass focus without creating a chain, never sooner.

Sequence:

• Attacker uses an action (e.g., Void Seeker) to kill the defending unit
• Defender passes priority and the action resolves, killing their unit
• Focus passes to the defender, who can still play actions
• Showdown continues until both players pass focus without creating a chain

Nuances:

• A player whose unit died can still play actions when they receive focus, such as playing a Zhonya's Hourglass that was hidden at the battlefield