When a chain resolves in Riftbound, does focus pass after the last item resolves, and can a player cast another Action before passing focus?

Ruling: Actions can only start a chain, never be cast while a chain is open. After a chain fully resolves (all items from last to first), focus automatically passes to the next player, who can then start a new chain with an Action.

Sequence:

• Chain resolves in reverse order (last in, first out)
• All items must fully resolve
• Focus automatically passes when the chain closes
• Next player gains both Focus and Priority
• That player can then start a new chain (including with an Action)

Nuances:

• A player cannot cast multiple Actions before passing focus; focus passes automatically when the chain they start closes
• Triggered abilities that occur during resolution may become the new "last item on the chain" and affect when focus passes