Impact (ability)

Impact is a Black Magic spell found in Final Fantasy XI. It may be only cast by players who have the Twilight Cloak equipped, which is a rare drop from Shinryu. The Twilight Cloak may be worn by Black Mages, Dark Knights, Geomancers, Red Mages, Scholars, Summoners, and White Mages upon reaching level 90. When cast, the target suffers dark elemental magical damage and all attributes are reduced by 20% for up to 3 minutes.