In a showdown, if the attacker passes priority and the defender plays a reaction (Shen), can the attacker play an action after the reaction resolves, or did they already pass their opportunity?

Ruling: When a reaction resolves in a showdown, priority returns to the attacker. Damage only occurs after both players pass priority consecutively without playing anything.

Sequence:

• Attacker has priority first and may play actions or pass
• If attacker passes, defender gets priority
• If defender plays a reaction (like Shen), after it resolves priority returns to the attacker
• Priority alternates between attacker and defender until both pass consecutively
• Only when both players pass in a row without playing anything does damage occur

Nuances:

• A single pass does not lock a player out of future actions in that showdown
• Priority alternates back and forth (attacker, defender, attacker, defender) until both pass consecutively