Dispelga

Dispelga (デスペガ, Desupega) is a recurring spell that appears in later Final Fantasy games. It is an upgraded version of the Dispel spell, which targets all units of the enemy party and removes all buffs from those units. It is generally available to endgame or late game bosses, though it can be used by the party in some installments.

Final Fantasy X
Dispelga first appeared in Final Fantasy X, but not as a spell that the player could use; it was exclusive to Seymour Guado.

Final Fantasy XI
Dispelga is a Black Magic spell available only to some Notorious Monsters (although Scholars could simulate it by casting Dispel with Manifestation). It removes one status effect from all targets (generally players) in range.

Final Fantasy XII
Dispelga is a level 6 White Magick spell and that costs 8,200 gil and 50 LP to acquire. The spell can be bought in Balfonheim. Dispelga is identical to the original Dispel spell, that only affects multiple targets. It can also remove the Slow and Stop statuses.

In the International Zodiac Job System version, Dispelga is a White Magick 10 License. It can only be obtained from a chest in the Feywood's White Magick's Embrace. It is a spell for both White Mage and Monk job classes, though Monks can only learn it after getting the license for the Esper Famfrit.

Final Fantasy XII: Revenant Wings
Dispelga is learned by Fran at level 40 as well as by enemy White Mages. It removes buffs from a small radius of enemies.

Final Fantasy XIII
Dispelga is a Technique which cost 1 Technical Point to use. It removes all buffs and debuffs from all allies and enemies. It is learned at Crystarium Level 8. Lightning learns it in the Commando role, Snow and Fang learn it in the Sentinel, and Sazh, Vanille and Hope learn it in the Ravager role.

Final Fantasy Tactics
Dispelja, known as Despair 2 in the PS version, is an enemy ability available to the Lucavi Ultima in her Arch Seraph form. It dispels Float, Reraise, Invisible, Regen, Protect, Shell, Haste, Faith, and Reflect. This spell can target more units than Mystic's Harmony and Templar's Dispel, but they all have the exactly same effect. See also enemy abilities.

Final Fantasy Tactics A2: Grimoire of the Rift
Dispelja appears as an enemy ability available to the Neukhia Whisp. It dispels all buffs from all opponents on the field.