Three objects make up the Deathly Hallows: the Elder Wand, the Resurrection Stone, and the Invisibility Cloak. In the story, possessing all three is associated with becoming the Master of Death.
The Hallows originate in “The Tale of the Three Brothers,” a wizarding fairy tale told in Harry Potter and the Deathly Hallows. Three brothers are said to have encountered Death and received magical gifts: a wand that could not be defeated, a stone that could summon the dead, and a cloak that concealed its wearer.
The Hallows are often confused with Horcruxes, but they are entirely different. Horcruxes are objects used to preserve fragments of a dark wizard’s soul, while the Hallows are legendary magical artifacts. The Resurrection Stone also does not truly restore the dead to ordinary life; it summons their shades or presence.
Harry eventually possesses or commands all three during the final story, although his understanding of their meaning differs from Voldemort’s obsession with defeating death through power.