During a showdown, after the initial chain resolves and a player plays an action spell that resolves, who gets priority next - does it depend on who played the spell?

Ruling: During a showdown after the initial chain has resolved, when the chain becomes empty again, the player who did NOT own the most recent effect on the chain gets focus and priority.

Sequence:

• Initial chain (attacker/defender triggers) resolves
• Attacker has focus and priority first
• If attacker plays an action spell and it resolves (chain empty), defender gets focus and priority next
• If defender plays an action spell and it resolves (chain empty), attacker gets focus and priority next

Nuances:

• The "initial chain" refers only to the attacker/defender triggers, not subsequent spells played during the showdown
• This rule only applies after the initial chain - during the initial chain resolution with empty chain, attacker always gets focus and priority