Can you respond to Brynhir Thundersong's play trigger with other cards before its effect resolves and prevents you from playing cards this turn?

Ruling: Yes, you can respond to Brynhir Thundersong's play trigger with other cards before its effect resolves and prevents you from playing cards.

Nuances:

• Only abilities/triggers and spells use the stack and can be responded to
• Units being summoned do not go on the stack before they resolve