S07E17 To Change a Changeling Summary

Starlight Glimmer and Trixie try to get Thorax's brother Pharynx to accept the new way by sharing love and transforming so he doesn't undermine Thorax's leadership, and that the hive will ultimately accept him.

My Little Pony: Friendship is Magic Season 7 Episodes...

My Little Pony: Friendship is Magic Show Summary

"Get your muzzle out of those books and make some friends!" That's what Princess Celestia tells Twilight Sparkle. She may be the smartest unicorn in Equestria, but Twilight Sparkle gets an "incomplete" in friendship. There's more to life than learning magic, after all - so she goes to Ponyville on a mission to make friends. There she meets five special ponies who take her on exciting adventures and teach her the most powerful magic of all... the magic of friendship!