Episode 51 of "Sabrina, the teenage witch"
s03e01 It's A Mad, Mad, Mad Season Opener

A showdown between Dashiell and Harvey is interrupted when aunts Hilda and Zelda freeze the boys to announce that Sabrina has at last qualified for her witch's license, which will grant her universal knowledge. When the overjoyed Sabrina travels to the Other Realm License Bureau to collect her prize, she is dismayed to learn that she is not allowed to use it yet not until she discovers her "family secret" (a quest which will presumably keep her busy throughout the third season). Her first clue comes in the form of the license clerk, who is actually her extremely bad-tempered cousin Doris, and in her unfortunate attempt to resolve her divided feelings with a spell which transforms the boys' rivalry for her into a full-fledged surreal duel to the death. (Sabrina: "Oh, no. This must be the spell. They're going to fight over my heart. Being a witch would be alot easier without all the magic.") Only when her cousin Doris is about to zap Harvey does Sabrina instinctively reveal who she really loves. Meanwhile, Hilda cheerfully allows Zelda to ask Mr. Kraft for a date, then finds that she is jealous... and Salem causes mayhem by insulting his Albanian Internet chess opponent Yuri, who turns up looking for revenge.