When can spells be played based on their timing keywords (no timing keyword, Action, Reaction)?

Ruling: Spells with no timing keyword are used in neutral open state (nothing on chain, no showdown). Action speed can be used in neutral open and showdown open states. Reaction speed can be used in all states including when the chain is closed.

Sequence:

• Base speed (no timing keyword): Anytime on your turn when there is no active showdown or chain
• Action Speed: Anytime you can play Base speed, plus anytime you have priority in a showdown with no chain (state is open)
• Reaction Speed: Anytime you could play Action, plus anytime you have priority in a showdown regardless of whether there is a chain

Nuances:

• Each speed inherits from those below it, so anytime you can play base speed you can also play action/reaction
• You must have priority to use them
• In neutral open state, you can only cast spells on your turn
• When it's not your turn, you can only use abilities if there is a chain and you get priority to react, or there is a showdown and you get focus/priority to play on an empty chain