Dusk Claymore

The Sword of the Sages was seen being used by the Seventh Sage in The Legend of Zelda: Twilight Princess. The sword was thrust into Ganondorf's chest in hopes of killing him. This was not the case, and Ganondorf took the sword and killed the Seventh Sage with it. Later in the game Ganondorf used the sword in the game-ending battle with Link.