Lustrous Sword

The Light Sword, also known as the Lustrous Sword, is a recurring weapon in the Final Fantasy series. It is usually a powerful holy-elemental sword.

Final Fantasy IV
The Lustrous Sword, originally called the Light Sword, is a weapon for Cecil found in the Sealed Cave. It has an attack power of 80 and 99 accuracy in the DS release, and 99 power and 49 accuracy in the Advance, Super NES and Playstation releases. It is holy-elemental and increases Strength and Spirit by three.

Final Fantasy IV: The After Years
The Lustrous Sword is found in the Subterrane and dropped by Amazons. It has 99 power, 50% accuracy, increases Strength and Spirit by three and is holy-elemental. Cecil, Ceodore, Kain and Golbez can equip it.

Final Fantasy Tactics A2: Grimoire of the Rift
The Light Saber has 22 attack power and teaches the Learn skill to Blue Mages for 100 AP.

Final Fantasy Crystal Chronicles: Ring of Fates
The Light Blade is a sword with 100 power.

Final Fantasy Crystal Chronicles: Echoes of Time
The Light Blade has 63 power and gives +5 to stun.

Final Fantasy: The 4 Heroes of Light
The Sword of Light gives +17 to attack and magic attack and is light-elemental.

Dissidia Final Fantasy
The Lustrous Sword is a Level 92 weapon exclusive to Cecil. It gives +64 attack and increases Cecil's defense by two when he is in Paladin form.