Living up to its title, the fourth part of "The Final Chapter" is a game-changer that puts a cap of sorts on the first block of episodes of the nine part finale (four episodes written together and coincidentally usually appearing on one DVD disc) while also leaving a cliffhanger for the remaining episodes to follow up upon.
Full of bold strokes and political intrigue, "Changing Face" finally brings several plot lines to their breaking points, balancing its big war story with small, personal moments. With fast-paced scenes that give each character (not named Jake) at least one moment to shine, each of the regulars get a chance to contribute, including an exciting battle with unexpected consequences stuck right in the middle. But the real substance of the episode lies with Kai Winn and Dukat on Bajor and Damar and Weyoun on Cardassia. "Strange Bedfellows" shows us Winn and Damar coming to decisions. This one shows us the consequences. The beauty of it lies in the reactions, whether it be Winn coming to terms with herself, or Weyoun coming to terms with the new Damar. (Combs's icy look is priceless).
Being stuck in the middle of a giant multi parter, "Changing Face" is easy to overlook when reflecting upon the season and the series as a whole, but stands up with some of DS9's best work and gives "The Final Chapter" the kick in the pants it needs.