Question: how can the sword of gryffindor destroy horcruxes?
Answer: Magical properties Whenever a "true Gryffindor" needs it, the Sword will let itself be pulled out of another of Godric Gryffindor's artefacts - the Sorting Hat. ... Due to Harry Potter killing Salazar Slytherin's Basilisk with it, the sword is imbued with Basilisk venom and can destroy Horcruxes.