Barthundra is a White Magic spell found in Final Fantasy XI. It may be learnt by White Mages at level 25. When cast, all party members in a limited area of effect will have an increased chance of taking decreased damage from Lightning-based attacks and no damage from Lightning-based spells. It may be recast every 10 seconds, for 12 MP. Like all Enhancing Magic, its effectiveness varies depending on the player's Enhancing Magic skill. It is also an upgraded version of Barthunder.