Currently in the late-game of my first Gathering Storm game, and bought a rock band. Checked out its promotions and saw Indie, which removes 50 loyalty from the city it plays in. Heheheheh... I didn't know if using two on a city would work to flip it in a single turn, BUT IT DOES. I didn't have that much faith output but I hadn't actually spent any all game so bam, I was able to purchase a few rock bands with the policy that lets rock bands choose from any promotion, and RIP Brazil's largest cities. The best part is that the now-free cities are GAINING loyalty and thus won't be flipping back to Brazil any time soon! It's a pretty wacky gimmick but it sure is hilarious.

https://preview.redd.it/psur4hcu64a31.jpg?width=1904&format=pjpg&auto=webp&s=fd3c94e2a70f143ae10bb5decefa5b49ac085873