It is the ability to turn someone/something from one form into another. Samantha's family has turned Darrin into many things.
- Endora turned Darrin into a toad, a billy goat, a cat, a horse, a boy, and an old man.
- Samantha once turned Darrin into a goose by accident and Aunt Clara accidently turned Darrin into a chimpanzee.
- Maurice once turned Darrin into a mule for not accepting his gift and Serena turned Darrin into a gorilla.
- Serena turned Mrs. Stephens into a cat for insulting her family.
- Serena also turned one of Darrin's clients into a monkey for "Making a monkey out of Samantha."
- Tabitha once turned a girl into a butterfly, Sydney into a toad, a man into a little boy, and a little boy into a bulldog.