Phantom Sword

The Phantom Blade is the only thing that can harm Bellum and Phantoms in The Legend of Zelda: Phantom Hourglass. It is composed of three types of Legendary Steel.

Components of the Phantom Blade
Link is told to find three forms of Legendary Steels, Scarlet Steel, Azure Steel, and a currently unknown steel, and take them to a legendary blacksmith to forge the Phantom Blade.

See also:
 * Scarlet Steel
 * Azure Steel