The Legend of Zelda Link Master Sword Sheat 3D model

The Master Sword was originally crafted by the Goddess Hylia as the Goddess Sword, and 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 augmented after the Sword received the blessing of Zelda, which transformed the blade into the true Master Sword. Although not always, it is the only weapon that can defeat Ganon in the games it appears in.