In Riftbound, when two units are on one battlefield and a reaction is activated, can players continue to play actions/reactions before combat damage is dealt, or does damage happen immediately?

Ruling: Players can continue to play reactions (but not actions) during a chain until both players pass priority in succession. Only then does the game move to the combat damage step where units deal damage.

Sequence:

• When a chain is in progress, players can only play reactions (not actions)
• Players alternate playing reactions or passing priority
• Once both players pass priority in succession, the chain resolves
• After the chain resolves, combat damage is dealt

Nuances:

• Reactions can be played in response to actions, but actions cannot be played in response to reactions
• During combat on a battlefield, players can use reactions to modify might values before damage is dealt
• Example: If opponent plays an action like Hextech Ray, you can respond with a reaction like Discipline. But if opponent plays Discipline first, you cannot respond with Hextech Ray since it's an action