Can Kaisa's leader ability pay for the additional power cost of targeting a Deflect unit with reflexive triggers created by spells like Falling Star?

Ruling: Kaisa's leader ability cannot pay for the Deflect cost of reflexive triggers created by spells like Falling Star or Icathian Rain. Her ability can only be used to pay for playing spells themselves, not for costs incurred by reflexive triggers.

Nuances:

• Kaisa can use her ability to pay for the power cost of the original spell itself
• Reflexive triggers generated by spells are not themselves spells, so Kaisa's ability does not apply to their costs
• This distinction would only matter for spells that have no power cost but create reflexive triggers that target