Expecto Patronum is the spell from Harry Potter used to conjure a Patronus, a protective guardian that drives back Dementors. This version is a trap remix by Goblins from Mars, reworking the magical incantation over modern electronic production rather than keeping the film score intact. Trap remixes of familiar film and game moments became a staple of short-form video edits, where a recognisable cue can signal a reveal in seconds. That familiarity is why the clip still works: listeners recognise the spell instantly, even before the beat drops.