Deathbringer

The Deathbringer is a recurring weapon in the series. It is usually a sword of dark power, which can also have the ability to instantly kill a foe.

Final Fantasy
The Deathbringer can be obtained in the Dawn of Souls dungeons as enemy drops. It can be used as an item in order to cast the spell Death.

Final Fantasy IV
The Deathbringer is the strongest dark sword in the game and can intantly KO an enemy on hit.

Final Fantasy X
If one of Tidus' swords has the Deathtoch\strike ability as dominant, it is called as Deathbringer.

Final Fantasy XII
The Deathbringer can be bought at Balfonheim and it has a chance to instantly KO the target on hit.

Final Fantasy Tactics
The Deathbringer is exclusive to the War of the Lions remake as a Fellsword, and it can inflict Doom on hit. Like all Fell Swords, it is exclusive to the Dark Knights Job.