When playing Gust in response to a chain of spells, can it target Ravenbloom Student before her ability triggers resolve to give her bonus might, and are spell targets locked when added to the chain?

Ruling: Targets are determined before putting a spell on the chain and cannot be changed. If you play Gust without letting any Ravenbloom Student triggers resolve, she will be at 2 might and can be targeted.

Sequence:

• When spells are played in response to each other, Ravenbloom Student's triggers go on the chain
• If Gust is played before any triggers resolve, Ravenbloom is still at base 2 might
• Targets for all spells are locked when they are added to the chain

Nuances:

• You can let individual triggers resolve strategically - if one spell resolves and triggers Ravenbloom (going to 3 might), then when the next spell resolves and triggers again, you can still respond with Gust while she's at 3 might before that second trigger resolves
• Ravenbloom triggers can be responded to since they go on the chain