Master Sword

The Master Sword, also known as The Blade of Evil's Bane, is a recurring legendary sword in the Zelda series. Originally crafted by the goddess Hylia as the Goddess Sword, it was later forged into the Master Sword by the goddess's chosen hero and its spirit Fi, who bathed it in the three Sacred Flames located across the land that would become the Kingdom of Hyrule. Din's Flame in particular, imbued the sword with the power to repel evil, a power apparently augmented after the sword received the blessing of Zelda, which transformed the blade into the True Master Sword. It is usually the only sword that can defeat Ganon in the games it appears in.
True to its name, the sword is often seen to choose or accept its master by its own will, always a hero who has gone through great trials that test his courage, wisdom and power to prove him worthy of wielding it. This may be the conscious choice of the sword's spirit, Fi, who sleeps eternally within the sword and only assists her heroic master.
== Abilities ==
The Master Sword's most known ability is the power to vanquish evil and break curses that involve powerful, dark magic. Infused with the sacred flames provided by the Golden Goddesses, the sword is effective even against evil ones possessing the Triforce. However, in order to keep the power to repel evil intact, two Sages, known as the Sage of Earth and the Sage of Wind, are in charge of praying to the gods and thus infuse the Master Sword with the gods' power. Should something happen to these Sages, the Master Sword will weaken and lose its might to combat evil. In Skyward Sword, it is seen that the sacred blade has the ability to lock away the remains of a demon.
Only the true hero that is "pure of heart and strong of body" is capable of wielding the sacred blade, and as such, those with tainted hearts cannot even touch this powerful sword. If a hero who is too young to bear the title that comes with the Master Sword withdraws this blade from its pedestal, the Master Sword will seal away the hero's soul and awaken him when the bearer comes of age to wield it.