If you play Gust on your own Ravenbloom Student at 3 might, does it get sent to your hand, or does it become 4 might first (from its trigger) and become an invalid target?

Ruling: The Ravenbloom Student will be sent to hand before its trigger can resolve. The student's trigger responds to the resolution of the spell, not to the spell being put on the chain.

Sequence:

• Gust resolves and sends the 3 might student to hand
• The student's trigger (which would give +1 might) does not resolve because the spell must finish its entire process before triggers respond
• A spell is only considered "played" when it has finished resolving in its entirety

Nuances:

• "Play" in this game means resolve, except when used in contexts like "you may play a unit"