If I play Falling Star on a unit with Deflect 2 how much do I need to recycle?

To determine how much you need to recycle when playing Falling Star on a unit with Deflect 2, we must look at how the Deflect keyword interacts with spells that choose targets multiple times.

According to the FAQs provided in the context:

• "You must pay the Deflect cost for each time the unit is targeted."
• "If a unit is targeted twice by Falling Star, you pay the Deflect cost twice."

Ruling: Since Falling Star has two instances of "Deal 3 to a unit," if you choose to target the same unit with both instances, you must pay the Deflect cost twice. Because the unit has Deflect 2, you must pay 2 Power for each instance of targeting.

Total Cost:

• Base Cost: 2 Energy and 2 Power (as per the card's printed cost).
• Deflect Cost: 2 Power (for the first target) + 2 Power (for the second target) = 4 Power.
• Total: 2 Energy and 6 Power.

You must recycle a total of 4 Power (runes) to satisfy the Deflect costs for targeting that unit twice.

Note: This is based on the rule that Deflect imposes a mandatory additional cost for each time a spell or ability chooses the permanent (Rule 735.1.c).