How does Convergent Mutation interact with Teemo, Scout's "When you play me" trigger when played in response to the trigger being on the chain?

Ruling: When you flip Teemo and respond to his "When you play me" trigger by playing Convergent Mutation before the trigger resolves, Convergent Mutation resolves first (setting Teemo's Might equal to the targeted unit's current Might), then Teemo's trigger resolves (adding +3 to Teemo's Might). If you let Teemo's trigger resolve first, he gets +3 Might before Convergent Mutation sets his Might equal to the target.

Sequence:

• Lee Sin attacks and passes priority
• Reveal Teemo, "When you play me" trigger creates a chain
• React with Convergent Mutation targeting Teemo and Mundo, no responses
• Convergent Mutation resolves, setting Teemo to 8 Might (Mundo's current Might)
• Mundo goes to 9 Might from Convergent Mutation entering trash
• Teemo's trigger resolves, giving him +3 Might up to 11 Might
• Combat resolves: 20 total Might (11 Teemo + 9 Mundo) vs 18 Lee Sin

Nuances:

• Convergent Mutation snapshots the target unit's Might at time of resolution; later changes to that unit's Might don't retroactively affect the boosted unit
• If Teemo's trigger had resolved before playing Convergent Mutation, Teemo would end at 8 Might total (not 11) because Mutation would overwrite the previous buff