Can you respond to Jinx - Loose Cannon's Beginning phase ability trigger with a reaction card to prevent them from drawing cards and scoring?

Ruling: Yes, this scenario is valid. When Jinx's ability triggers at the beginning of the turn, it creates a window where either player can respond with reactions before the ability resolves. If you respond with a reaction that changes the game state so Jinx no longer qualifies for the ability (e.g., by removing a unit or causing them to draw cards), they will not draw the extra card. Scoring happens after the Beginning step, so preventing the draw can prevent scoring.

Sequence:

• Opponent starts Beginning phase and awakens
• Jinx's ability triggers (this always happens regardless of hand size)
• Priority passes and you can respond with reactions
• Your reaction resolves (e.g., Gust to remove a unit)
• Jinx's ability resolves, checking current game state
• If conditions are no longer met, no cards are drawn
• Scoring step occurs after Beginning step

Nuances:

• Hidden Blade specifically doesn't work because it's an Action, not a Reaction - use Gust or similar reactions instead
• The Jinx player can also respond to their own trigger by playing reactions to empty their hand, then draw cards when the ability resolves
• Jinx's ability always triggers at the beginning regardless of hand size; it just sometimes doesn't do anything if conditions aren't met