Darkga

Darkga (ダークガ) is a recurring spell in the series. It is the strongest form of the Dark spell.

Final Fantasy XII
Darkga is an Arcane Magick that causes high Dark-elemental damage and that has the maximum Effect Capacity, which means no other spell or Technick can be performed simultaneously. The spell can be obtained from Arcane Magick 7 license for 105 LP. The spell can only be purchased in Balfonheim for 9,400 gil after the events in Giruvegan.

In the International Zodiac Job System, the Arcane Magick Licenses have been reduced to two. Dark and Darkra are both Arcane Magick 1 License, which costs 40 LP, and Darkga and Ardor are Arcane Magick 2 License and costs 50 LP.

Final Fantasy Tactics A2: Grimoire of the Rift
Darkga is not accessible to the player, but is part of the Dark Magick skillset used by Ghost enemies.

Final Fantasy: The 4 Heroes of Light
Darkaga is a high level Black Magic spell. The spell costs 4 AP to cast and it has a spell power of 15. It can only be used if the Darkaga Tome item is in the character's inventory. The spell can only be purchased in Invidia for 5,000 gil. A Darkaga Tome can also be found in a chest inside the Magic Laboratory.