Fira Blade

Fira Blade, also known as Fira Sword or simply Fira, is a recurring ability in the series. It is generally a mid-powered Fire-elemental Spellblade ability, either giving the user the element as long as they don't use another Spellblade ability or outright dealing damage. It generally requires the Fira spell in order to use it.

Final Fantasy V
Fira is a level 3 Spellblade ability that costs 5 MP to cast. When used against an enemy that is weak to Fire-elemental attacks, the power of the user's attack is tripled and pierces the target's defenses.

Crisis Core -Final Fantasy VII-
Fira Blade is a rank 3 Command Materia that costs 16 MP to use. It can be obtained by stealing it from Crescent Unit Primus.

Final Fantasy IX
Fira Sword is a Sword Magic ability for Steiner while Vivi is in the party. It costs 12 MP to cast and increases Steiner's attack by 10.

Bravely Default
Fira is a level 3 Sword Magic ability, costing 15 MP to use and adds medium-power Fire-element to the user's physical attacks.