Giga-Graviton (ギガグラビトン, Giga Gurabiton?) is a recurring ability in the Final Fantasy series. It is a massive blast of energy that causes heavy damage, and is the signature ability of Sin and Caius Ballad.
Giga-Graviton returns as an enemy ability, used again by Caius and for the first time, by Bhunivelze. It behaves similarly to Ruinga, as it will throw the player to the ground when used. Bhunivelze can cast Ruinga first to launch Lightning, and then use Giga-Graviton to send her to the ground.
One of Sin's cards is able to use Giga-Graviton. For the cost of discarding another Sin card and paying 13 Light CP, Sin causes the opponent to instantly lose the game at the next 1st Main Phase if Sin is still active on the field.
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