When playing Falling Star, when must both targets be chosen - can the player choose one target, let it resolve, then choose the second target, or must both targets be chosen at once when the card resolves?

Ruling: When Falling Star resolves, both reflexive triggers are put on the chain and both targets must be chosen at that time, before either trigger resolves. Once targets are chosen and the triggers are on the chain, they cannot be changed.

Sequence:

• Play Falling Star (no targets chosen yet)
• Falling Star resolves → both triggers are put on the chain and targets are chosen now for both triggers
• First trigger resolves
• Second trigger resolves
• Opponents can react between each step

Nuances:

• If a unit is removed before Falling Star resolves (e.g., via Retreat), the triggers can only target remaining legal units when they are put on the chain, potentially forcing the caster to target their own units
• This differs from spells like Singularity, which require targets to be chosen when casting the spell, not when it resolves
• The reflexive triggers are not optional - if there are legal targets, they must be chosen
• Deflect costs are paid after targets are chosen for the reflexive triggers, and the caster can choose not to pay these costs, which removes the trigger from the chain