Horcruxes. Harry became a Horcrux when a fragment of Voldemort's soul attached itself to him after the unsuccessful curse. The lightning bolt-shaped scar on Harry's forehead is a direct result of this attempted murder, and the connection that formed as a result is used to explain several important plot points. Throughout the series, Harry is able to receive insight into Voldemort's mental and emotional states, allowing the reader to eavesdrop on the series' primary antagonist. This insight is usually accompanied by pain in the scar on Harry's forehead. Through Voldemort, Harry also inherited the ability to speak and understand Parseltongue. It is also revealed by Rowling in an interview that Harry's frequent pain in his scar when Voldemort is either active, nearby, or feeling strong emotions, is really the trapped bit of soul yearning to depart from Harry's body and rejoin its master's soul. This yearning was one of the reasons why the Killing Curse used by Voldemort on Harry in the Forbidden Forest does destroy the fragment of Voldemort's soul within Harry, but only sends Harry's soul into a near-death state. Harry could return to his body despite being hit by the Killing Curse from the Elder Wand because Voldemort had used Harry's blood to regain his full strength in Harry Potter and the Goblet of Fire, and because the actual master of the Elder Wand, Draco Malfoy, had been defeated by Harry, making Harry the new master of the Elder Wand. Harry's ownership of the wand used for the curse and the Horcrux-like connection between Voldemort and Harry diminished Voldemort's curse and protected Harry from irreversible death. While Voldemort did learn of Harry's telepathic connection, Voldemort was never aware that Harry was inadvertently carrying a fragment of his soul. With this destroyed, the connections between the two were also broken, and Harry never again felt pain in his scar. Rowling revealed Harry has also lost the ability to speak Parseltongue, though he regained the ability to understand it in Harry Potter and the Cursed Child after his scar began to hurt again following the rise of Voldemort and Bellatrix's daughter Delphi whom Harry, his son Albus, and his allies defeated and sent to Azkaban. In the epilogue of the last film, the scar has faded to an ordinary-looking scar on Harry's forehead. Nagini The sixth Horcrux was Nagini, the snake Voldemort had with him constantly. This Horcrux was