If you retreat in response to Falling Star being played, leaving only a single unit with deflect on the board, can the Falling Star player choose to pay the deflect cost for only one of the two triggers?

Ruling: Yes, when Falling Star creates two reflexive triggers that both must target the same unit with deflect, the player can choose whether to pay the deflect cost for each trigger independently. They can decline to pay for one or both triggers.

Sequence:

• Falling Star is played
• Players can react (this is when retreat could happen)
• Falling Star resolves, creating 2 reflexive triggers
• Pick target for reflexive trigger #1 (if it targets enemy unit with deflect, paying the cost is optional)
• Pick target for reflexive trigger #2 (if it targets enemy unit with deflect, paying the cost is optional)
• Players can react
• Reflexive trigger #2 resolves (if deflect cost was paid)
• Players can react
• Reflexive trigger #1 resolves (if deflect cost was paid)

Nuances:

• The player can decline both triggers if they don't want to pay the deflect cost
• Each deflect cost payment is independent and optional