For cards with reflexive triggers like Falling Star, when do you announce targets, and what happens if the only available target has Deflect X?

Ruling: You do not announce targets when playing Falling Star. When Falling Star resolves, it creates reflexive triggers that require targets. If the only target has Deflect X, you can choose not to pay the deflect cost, causing the triggers to fail to finalize (not fizzle).

Sequence:

• Play Falling Star (no targets required at this point)
• Falling Star resolves
• Two reflexive triggers are created and placed on the chain as pending
• Targets must be declared for all triggers simultaneously before they finalize
• Each trigger resolves one at a time in reverse order
• Players can react after each trigger resolves

Nuances:

• You cannot play a card that requires targets if there are no legal targets available
• Reflexive triggers from cards like Falling Star and Icathian Rain don't require target declaration until after the spell resolves
• All reflexive triggers must have targets declared at the same time; you cannot choose targets sequentially as they resolve
• When triggers fail to finalize, they are removed from the chain (the spell itself still resolves)