The Disarming Charm became Harry Potter's signature spell, and it notably caused the death of Lord Voldemort during the Battle of Hogwarts by rebounding his Killing Curse because the Elder Wand recognised Harry as its master through the spell connection, and thus strengthened the Disarming Charm to the point that ...

What spell killed Voldemort in the books?

Harry used his signature dueling spell: Expelliarmus. Due to a combination of the Elder Wand's true owner being Harry, not Voldemort, and the spells colliding, Voldemort's Avada Kedavra rebounded upon him (again). Since at that point all of his horcruxes had been destroyed there was nothing to keep him alive.

What is the spell that Voldemort uses to kill?

' as Voldemort screamed, 'Avada Kedavra! ' he was giving all those around him the message he gave Lupin: this was about ending bloodshed, not creating it. Voldemort's signature spell was Avada Kedavra. Harry's was Expelliarmus.