Can you use a reaction spell to buff Carnivorous Snapvine's might before its ability resolves?

Ruling: Yes, you can play a Reaction spell in response to Snapvine's trigger to buff its might before the ability resolves. However, your opponent can also play Reactions in response.

Sequence:

• Snapvine is played
• Trigger is created for its ability
• You can play a Reaction in response (and so can your opponent)
• The Reaction resolves first, then Snapvine's ability resolves

Nuances:

• Non-Reaction spells (like Primal Strength) cannot be played on the chain after the trigger
• Reactions that reduce might (like Smokescreen) can lower the damage dealt by Snapvine