Thundaga II is an upgraded version of the original Thunder spell, found in Final Fantasy XI. It may be learnt by Black Mages at level 61. When cast, it will deal Lightning-based elemental damage to all enemies in the targeted area. It may be recast every 26 seconds for 193 MP. Apart from this, there are three stronger versions available in the game: Thunder III, Thundaga III, and Thunder IV.