[G1] Episode 00C - "My Little Pony: The Movie" (1986)

The witches from the Volcano of Gloom attempt to concoct the most vile of all brews - the Smooze, a purple life form of slime that yields to no obstacles. With its help, the Witches seek to destroy Dream Valley and leave it a barren wasteland! Can Megan and the ponies find the Smooze's weakness and stop the witches before it's too late?
(Please, please please PLEASE support the official release. Buy the DVD. I did, you should too. It's good stuff. Show Hasbro your support so they'll keep making more of these!)