He-Man: Diamond Ray of Disappearance

"Diamond Ray of Disappearance" is the fourth episode of season one of the animated sci-fi/fantasy series He-Man and the Masters of the Universe. It was directed by Lou Zukor and written by Robby London. It first aired in syndication on September 5th, 1983.

Plot
Skeletor summons his most powerful legion of Evil Warriors. He reveals to them his latest tool in his conquest of Eternia: The Diamond Ray of Disappearace. Back at the palace, all seems well when suddenly Skeletor's warriors attack. Using the Diamond, Skeletor sends our heroes to another dimension and then leaves to conquer Castle Grayskull. At the castle, he encounters He-Man who maks short work of Skeletor's forces. He-Man must then face the near impossible task of crushing the Diamond to save his friends.