Berserk

Usage: berserk <target>
Usage: berserk (when used in battle, if no target is supplied, automatically 
               targets opponent)

Berserk will convert some of you endurance into a sudden burst of power and
strength, greatly enhancing your damage, but limiting your intelligence and
clarity of mind. While in this state, it will be difficult for you to do
anything but focus your energy upon killing your target -- but killing your
target is exactly what you will do. This damage bonus comes with a drawback,
however - a berserking target is easier to hit.