Mr. Mxyzptlk and the Magic Lamp

In this episode a small-time thief named Benny finds an ancient lamp during a robbery. Batman and Apache Chief apprehend the crook...but observing from a distance is Mxyzptlk. He decides to get into the act by playing the part of a genie...who zaps the crook away...and from that point forward the two go on a crime spree. Batman gets the last laugh on Mxyzptlk, though.