Mighty Guard (ability)

Mighty Guard, also known as Big Guard, is a Blue Magic spell that gives positive statuses to the party against attacks and magic.

Final Fantasy V
Casts Protect, Shell, and Float on the party. The only enemies that cast it are the Stingray, Azulmagia, and Shinryu. However, to make them cast it on the party, you must either Control them, in the case of the Stingray, or cast Reflect on them. In the Advance version, the Ironclad enemy and the superboss Neo Shinryu also cast this spell.

Final Fantasy VI
Usable by Strago. Protect and Shell on all party members. Named "Big Guard" in the original English SNES translation. It costs 80 MP.

Final Fantasy VII
Big Guard is an Enemy Skill, which can be acquired relatively early in the game. To obtain it, Manipulate on the enemy Beachplug on the beach near Costa del Sol. The spell casts Haste, Barrier, and MBarrier on the party for an MP cost of 56. However, these status effects drain much faster than normal, usually lasting only several turns (due to Haste). Even so, Big Guard is incredibly useful throughout the entire game.

Final Fantasy VIII
One of Quistis' Limit Breaks. Can be learned by using the "Barrier" item on Quistis (by Mugging or defeating a Behemoth). It always adds Protect and Shell, and may add Haste, Float, Regen, and Aura.

Final Fantasy IX
Usable by Quina, this spell grants the Protect and Shell status to all party members, and can be learned by Eating either a Serpion, Myconid, Gigan Octopus, Antlion, or Gargoyle. It costs 64 MP to cast.

Final Fantasy X
Usable by Kimahri as an Overdrive. The spell casts Protect, Shell, and NulAll on the party.

Rikku also has Mighty G among her multitude of mixes with three extra: Mighty Wall gives Protect and Shell, Mighty G adds Haste, Super Mighty G includes Regen; and Hyper Mighty G has all the rest along with Auto-Life. However, Rikku's does not give NulAll.

Final Fantasy X-2
Can be learned by a Gun Mage. It bestows Protect and Shell. Mighty Guard G and Not-So-Mighty Guard also exist as enemy abilities. Might Guard G nullifies all physical and magical damage, while Not-So-Mighty Guard gives the enemy party Protect, Shell, and Regen.

Final Fantasy XII: Revenant Wings
Mighty Guard is a skill used by Raz, the Judge of Wings, Tiamat, and enemy Warmages. It gives a Barrier effect to a small circle of allies.

Final Fantasy Tactics Advance
Ups the Defense and Magic Defense of one party member for the battle.

Final Fantasy Tactics A2: Grimoire of the Rift
Increases the Defense and Magick Resistance of a target unit.