Fierce Deity Sword

The Double Helix Sword is a sword from The Legend of Zelda: Majora's Mask. This longsword can be used when Link uses the Fierce Deity's Mask to transform into the Fierce Deity. Aside from its long range, the Double Helix sword fires magical green blasts when it is used while Z-targeting, though the blasts consume magic power. The sword cannot be unequipped until Link removes the Fierce Deity's Mask, which returns him to his normal Hylian form.