Razor Sword

The Razor Sword is a sword from The Legend of Zelda: Majora's Mask. This sword can be obtained by having Zubora and Gabora, the smiths of the Mountain Village, re-forge Link's Kokiri Sword for 100 Rupees. It is twice as powerful as the Kokiri Sword, but once Link strikes with it a total of two hundred times, the edge becomes dull and useless, and the sword reverts back into the Kokori Sword. The sword will also revert back into the Kokiri Sword if Link travels back in time.

The Razor Sword can be further forged into the Gilded Sword which never loses its edge by providing the smiths with Gold Dust won from the Goron Races. This can only be done on the Second Day, as the Kokiri Sword has to be forged into the Razor Sword on the First Day and since the Carnival of Time is held on the day after the third day, and the re-forging process takes until the morning of the next day.

Soulcalibur II
In Soulcalibur II, this weapon is available for 600 gold. It is the first weapon the player can purchase for Link. It possesses a very sharp edge with higher attack power, but it is shorter than the Master Sword and may cause Link to take damage even if he is guarding, as the metal the sword is made from "is prone to chipping."