When passing priority during a Showdown in combat with an empty chain, does the non-turn player need to pass twice in a row after the turn player passes, or does passing work differently?

Ruling: When you have focus and priority and the chain is empty, passing means you pass both focus and priority together (not just priority). If both players pass consecutively with nothing on the chain, the showdown ends.

Sequence:

• Contesting player (usually turn player) gains focus and priority at showdown start
• If contesting player passes with empty chain, they pass both focus and priority to opponent
• If opponent then passes with empty chain, both players have passed consecutively and the showdown closes
• Combat continues to damage step

Nuances:

• Focus passes back and forth until both players pass consecutively - it's not about each player getting one turn
• One player could play 5 actions while the other plays 0 if they keep passing focus back
• The player who contests the battlefield gains focus (usually turn player, but not always)
• Passing is contextual: passing with something on the chain only passes priority, passing with empty chain passes both focus and priority