Shock (ability)

Shock (ショック), also known as Vengeance, is a recurring ability or spell from the series. When used as an ability, it is associated with the Warrior class, but as a spell is generally a high-ranking Black Magic spell.

Final Fantasy IV: The After Years
Shock is a Ninjutsu ability, used by Edge and Zangetsu at the cost of 7 MP. It inflicts Lightning-elemental damage to all enemies.

Final Fantasy VI
Shock is the special command ability of General Leo and Gau as a chance of using this ability from Yojimbo Rage. It deals large amounts of non-elemental magic damage to all enemies, and it also removes the Invisible status if the monster(s) has this status applied to them. Its Spell Power is 128, and it cannot be dodged. Within the game's data, Yojimbo's Shock ability is called Megahit (Super Nintendo) and Megashock (Gameboy Advance). Unlike many of the other battle commands, Shock isn't disable if Leo has been transformed into an Imp.

Final Fantasy IX
Shock first appears as one of General Beatrix's abilities. Later in the game, Adelbert Steiner can learn it as a Sword Art from the Ragnarok. It deals large amounts of physical damage, roughly three times the damage Steiner's normal attack does, usually amounting to 9,999 damage. It costs 46 MP to use, and can be learned for 60 AP. Shock takes on the elemental properties of the weapon when used. The damage formula for Shock is as follows:


 * $$Base  = Atk Pwr * 3 - Target's Defence$$
 * $$Bonus = Str ... [(Lv + Str) / 8] + Str$$
 * $$Damage = Base * Bonus$$

Final Fantasy XI
Shock is a Lightning-elemental Black Magic spell that deals lightning damage over time that lowers an enemy's mind.
 * Negates the Drown spell's effect
 * Is negated by the Rasp spell's effect
 * Shock, Choke, and Burn are a family of compatible effects that can all stack together.
 * Shock and Frost also stack.
 * Part of the enfeebling elemental magic family exclusive to Black Mages:
 * Rasp
 * Drown
 * Choke
 * Burn
 * Frost
 * Shock

Final Fantasy XII
Shock is a Black Magick spell which inflicts heavy non-elemental damage on a single target. It is available on Black Magick license 6 costing 50 LP. The spell can be purchased at Port at Balfonheim after the events at Pharos at Ridorana for 9,400 gil and initially uses 34 MP to cast.

The International Zodiac Job System listed Shock as a Black Magick 11 License. It is bought in Balfonheim for 7,800 gil and consumes 34 MP. Only the Job class Black Mage can use Shock.

Final Fantasy XIV
Much like in Final Fantasy XI, Shock is a Lightning-elemental spell that deals damage over time. Available to Conjurers (Rank 12).

Final Fantasy Tactics
Vengeance, originally known as Shock! in the PlayStation version, is used by both Beowulf and Byblos, and acts as a Lifebreak spell, dealing damage equal to the difference in the user's Max HP and current HP. Byblos starts with the ability, while Beowulf must learn his at 600 JP. It has a range of 8 and costs 20 MP to use.

Etymology
In this case, Shock refers to a dangerous condition that disrupts the blood flow of the body.