Do the reflexive triggers from Falling Star and Icathian Rain trigger Dreaming Tree if you choose your own unit on the battlefield?

Ruling: No, the reflexive triggers from Falling Star and Icathian Rain do not trigger Dreaming Tree because it is the reflexive trigger targeting the unit, not the spell itself.

Nuances:

• This same principle applies to Kai'sa Legend's ability - you cannot tap Kai'sa to pay for Deflect when playing these spells since it's not the spell targeting
• You can use Kai'sa's ability to pay for Deflect on regular spells, just not on reflexive triggers like Falling Star and Icathian Rain