Whistle into watch

"By your age, he could turn a whistle into a watch and have it sing you the time."

- Bartemius Crouch Jr., disguised as Alastor Moody, to Harry Potter

This spell could be used to transform a whistle into a watch.

Cedric Diggory was capable of performing this spell by the 1991-1992 school year, according to Bartemius Crouch Jr., who was disguised as Alastor Moody at the time.

Behind the scenes

 * Given that Crouch Jr. only met Diggory that year and he knew nothing of Diggory's talents prior, it is possible this is a hypothetical spell that does not truly exist.

Appearances

 * Harry Potter and the Goblet of Fire (film)