Transformation is the magical ability to turn someone, something or oneself from one form into another. Samantha's family has turned Darrin into many things.
- Endora turned Darrin into a toad, a billy goat, a werewolf, a pony, a boy (twice), a newspaper and an old man.
- Samantha shrunk a rocking chair to four inches tall to make it easier to paint.
- Tabitha once turned Amy Taylor into a butterfly, Sydney into a mushroom, a man into a little boy, and a boy into a bulldog.
- Rodney transformed himself into a dog. Samantha transformed herself into a French woman named Michelle.
- Samantha transformed a dilapidated cabin into a beautiful home.
- Merle Brocken transformed a hairbrush into a toy fire truck.
- Paula turned Paul Thurston into a werewolf on Halloween.
- The Crone of Cawdor switched bodies with Terry Warbell.
- Samantha cast a spell on Aunt Clara to make her ten years younger.
- ↑ To Go or Not to Go, That Is the Question, Samantha the Bard, Trick or Treat, Solid Gold Mother-in-Law, Junior Executive, Out of the Mouths of Babes, Just One Happy Family, Samantha's Old Man
- ↑ Follow That Witch (Part 1)
- ↑ I Don't Want to Be a Toad, I Want to Be a Butterfly, Santa Comes to Visit and Stays and Stays, Just a Kid Again, Playmates
- ↑ Man's Best Friend, A Change of Face
- ↑ The Magic Cabin
- ↑ A Strange Little Visitor
- ↑ Halloween Show
- ↑ The Crone of Cawdor
- ↑ Accidental Twins