After a reaction spell resolves on the chain, can a player play another reaction immediately, or must the entire chain resolve first?

Ruling: Players can play reactions as the chain resolves. After each spell resolves, the player who controls the next item on the chain gets priority first, then the other player gets priority.

Sequence:

• Player A plays a spell
• Player B reacts with a spell (e.g., Consult the Past)
• Player A passes
• Player B's spell resolves
• Player A gets priority first (they control the next item on chain)
• Player A plays or passes
• Player B gets priority
• If something new is added, it resolves next; if not, continue resolving the chain

Nuances:

• Priority alternates between players as each item resolves, not just at the end of the entire chain