Chant of Berserker

Decreases all party members' P. Def. by 8%, M. Def. by 16% and Evasion by 4, and increases P. Atk. by 8%, M. Atk. by 16%, Atk. Spd. by 8%, Casting Spd. by 8%, and Speed by 8 for 20 minutes.