The Joker Is a Card

 is the fifth episode of the second season, and the forty-first episode of the Bewitched series. The episode was completed by July 16, 1965.

Plot
When Samantha's attempt at a peaceful dinner with Darrin and Endora is ruined with practical jokes, the witches realize that Sam's prank-loving Uncle Arthur has come for a visit. Arthur takes a liking to Darrin and offers to teach him a spell that will give Endora a taste of her own medicine.

Trivia

 * This is the first episode to feature Endora's brother, Arthur.

Cast

 * Elizabeth Montgomery as Samantha Stephens
 * Dick York as Darrin Stephens
 * Agnes Moorehead as Endora
 * Douglas Evans as Mr. Foster
 * David White as Larry Tate
 * Paul Lynde as Uncle Arthur

Source
Bewitched, Season Two episodes on Wikipedia. Retrieved on November 8, 2019.