Can you play reaction speed spells during an opponent's turn if they only pass priority without creating triggers, chains, or showdowns? What about in response to triggered abilities like Jinx's ability or scoring points?

Ruling: You cannot play reaction spells during an opponent's turn if there are no triggers, chains, or showdowns created. Phase changes and scoring points do not create priority windows. However, any triggered ability goes onto the chain and passes priority, allowing you to play reaction spells in response.

Sequence:

• Reaction speed spells can be played anytime you can use action or base speed spells (they ladder up from each other)
• During your own turn, you can play reaction spells at "sorcery speed"
• During opponent's turn, you need a trigger, chain, or showdown to get a priority window

Nuances:

• Jinx's ability triggers every single turn (whether it draws a card or not) and creates a priority window
• Scoring points from holding battlefield does NOT create a priority window
• Any "when X happens" triggered ability (like Viktor making a token when a creature dies) goes on the chain and is reactable