How does priority work in Riftbound after each item on the chain resolves, and how does focus work during showdowns?

Ruling: After each player passes priority without adding anything to the chain, the top item resolves. Then the player with the most recent item on the chain gets priority to potentially add further to the chain, and it requires all players passing priority without adding to resolve each item. Focus automatically switches to the next player in turn order when a chain empties.

Sequence:

• Players pass priority without adding to the chain
• Top item of the chain resolves
• Player with the most recent item on the chain gets priority
• Process repeats until chain is empty
• Focus automatically passes to next player in turn order
• Showdown ends when all players pass focus in order without making a chain

Nuances:

• Focus is the ability to start a chain
• Chains can start with either an action or a reaction
• Exception: At the start of combats with an initial chain, the attacker holds focus after any initial chain so they always get the first "open" focus in a combat