Biggoron's Sword

Biggoron's Sword is a reappearing sword in the Legend of Zelda series. A massive two-handed sword forged by Biggoron, this damaging sword cannot be used in conjunction with a shield.

The Legend of Zelda: Ocarina of Time
Biggoron's Sword is the fourth and final sword in Ocarina of Time. Although more powerful than the Master Sword, it cannot be used in conjunction with a shield as Link wields it with both his hands. It is an reinforced version of the Giant's Knife, as it does not break after a number of hits.

To acquire the sword, Link has to complete a fairly long and complicated quest with multiple stages, most of which are timed. Biggoron, its creator, is found at the apex of Death Mountain when Link is an adult.

Oracle of Ages & Oracle of Seasons
By using secret passwords, a similar trading sequence can be completed to obtain Biggoron's Sword in these games. In both Oracle of Ages and Oracle of Seasons, it is the strongest sword, and has longer reach than the other swords. However, since it uses both both of Link's item slots, other swords may be preferable; Using Biggoron's Sword will render him helpless against enemies/bosses that require a sword used with another item to kill.

The Legend of Zelda: Twilight Princess
What may be Biggoron's Sword makes an appearance in Twilight Princess. It appears as a sword on display in Hyrule Castle.

Other appearances
Biggoron's Sword makes an appearance in Soul Calibur II.