Master Sword

The Master Sword, also known as the Blade of Evil's Bane, among many other names, is a legendary sword imbued with the power to repel Ganon's Malice.

Overview
Originally forged by the first hero of Courage, the Master Sword was used to defeat Ganon for the first time. In order to do so, the sword was home to the spirit Fi, who allowed the sword to contain the power to seal the darkness granted by the goddess Hylia.

It possess the distinctive ability of permanently destroying Malice, a viscous substance created by Ganon and his army of monsters. This power would remain unique to the blade until the creation of the Edge of Duality, a Sheikah sword made in an attempt to recreate the Master Sword.

It also acts as the seal to the Sacred Realm accessed by placing the sword in its pedestal in the Temple of Time.

History
The sword was created during the dark Spirit War between the three Golden Muses and the Demon King Ganon. The first hero, Link, along with a companion spirit known as Fi traveled on a journey through the Death Mountains and Jikoh Valley in order to gather the most powerful materials and the most talented craftsmen for the task.

First, in order to forge the blade, Link enlisted the help of Goron Hero and legendary blacksmith Gor Gorah. Under his orders, the hero had to collect a rare metal and blessed water from the Spirit Springs. The metal was then forged into the blade by Gor Gorah on the fires of Mount Majora.

From there, Link and Fi would seek the help of Idora a Ruto craftswoman renowed for her elegance and beauty. She requested from the hero three materials: A block of a magical stone to withstand the power of the goddess, the skin of a Lynel to form its grip, and a small object of personal importance to Link. After collecting all materials, including an earing from Ilia, Link's childhood friend and love interest, Idora crafted the hilt and finished the legendary sword.

As the last step in this process, the spirit Fi entered into the Master Sword, giving the wielder the ability to perceive time in slow motion and giving the blade the final boost required to receive the goddess blessing.

After proving himself to Hylia in combat, she granted the sword the power to vanquish darkness, and with it, Link was able to defeat Ganon.