If a unit has Deflect, do cards like Falling Star (which deal multiple instances of damage) need to return multiple runes, or just one?

Ruling: Cards like Falling Star target for each instance of damage. If a unit has Deflect 1 and gets targeted twice, you would have to pay 2 power (one for each instance).

Sequence:

• Each instance of damage from the spell counts as a separate target
• Deflect triggers for each time the unit is targeted
• The caster must pay the Deflect cost for each instance