Dissidia Nightfall is an aerial physical Bravery attack for Cecil while as a Dark Knight, learned at level 13. It requires 20 CP to equip (10 when mastered), 180 AP to master, has Melee Low priority, and can induce Chase. Cecil quickly descends downwards, causing a small burst of darkness and knocking the opponent back.
Dissidia012 Nightfall returns as a Bravery attack for Cecil while as a Dark Knight, now learned at level 4. It now requires 90 AP to master and has Melee Low priority on the descent as well as Ranged Mid priority on the impact. It is otherwise the same as in the previous game.