Can you cast multiple reaction spells back-to-back in response to an opponent starting a Showdown, and does the same apply to Action cards?

Ruling: You can cast multiple Reaction spells back-to-back in response to an opponent starting a Showdown. However, you cannot chain Action cards back-to-back because they are not Reaction speed.

Sequence:

• Opponent starts the Showdown and has first opportunity to play an action
• You can play multiple Reaction spells consecutively
• For Action cards: play it, wait for reactions to it, resolve it, opponent passes their opportunity for Action, then it's back to you to play another Action if you have it

Nuances:

• The opponent who started the Showdown has first opportunity to play an action
• Action cards require waiting for reactions and resolution before playing another Action