Blue Fang

Blue Fangs (あおいきば) are items that appear in a few Final Fantasy games, and they first appear in Final Fantasy IV. When used, a Blue Fang inflicts Lightning-elemental damage on its target.

Final Fantasy IV
In Final Fantasy IV, a Blue Fang is first used in the opening sequence by Cecil to defeat a Zu who is attacking the Red Wings's airship.

In floor B3F of Sylvan Cave, there is a small room with six treasure chests, and the top-right one contains a Blue Fang which, like the other treasure chests, is guarded by six Evil Dreamers.

In the Super Nintendo version, the item is named Lit-Bolt, presumably short for "lightning bolt." In the PlayStation version, it is named LitStorm, possibly a shortening of "lightning storm."

Final Fantasy remakes
In Final Fantasy, starting with the Final Fantasy I & II: Dawn of Souls remake, Blue Fangs are found in treasure chests in a few of the Souls of Chaos dungeons. During a battle, a Blue Fang is used to cast Thundara without having to use any magic points.

Dissidia Final Fantasy
In Dissidia Final Fantasy, Blue Fang was repurposed as one of the Warrior of Light's ground Bravery Attacks. Unlike the main series, using Blue Fang causes chunks of ice to slowly descend onto the opponent. If the move is equipped, it can be used by pressing the Circle button.

Dissidia 012 Final Fantasy
In Dissidia 012 Final Fantasy, Blue Fang returns as a Bravery Attack of the Warrior of Light. This time, it was made available to him from the start.