Does The Dreaming Tree trigger a card draw when a spell with a reflexive trigger (like Falling Star) targets your own unit?

Ruling: No, The Dreaming Tree does not trigger from spells with reflexive triggers like Falling Star. The reflexive trigger itself is a "triggered ability" and not the spell itself, and only the spell needs to target for The Dreaming Tree to work.

Sequence:

• The spell (Falling Star) is cast
• The spell creates a reflexive trigger
• The reflexive trigger (not the spell) does the targeting
• Since the spell itself didn't target, The Dreaming Tree doesn't trigger

Nuances:

• Kill actions and deal actions are exceptions that have specific rules attributing the source back to the root game object
• Target attribution does not trace back to the source in the same way that kill/deal actions do
• This is an intentional design choice, though reflexive design can create unintuitive interactions