Dumbledore Explains the Priori Incantatem Effect

As Harry describes the duel with Lord Voldemort, he struggles to talk about the moment when his wand connected with Lord Voldemort's. Dumbledore explains the rare Priori Incantatem effect that caused Lord Voldemort's previous spells to emerge from his wand, including echoes of his victims like Cedric and Harry's parents.