Rod

From IvaPedia

Amounting to what is essentially a fancy stick, rods are a powerful aid to any mage, as many improve upon the wielder's mental prowess. Of course, the most common use is as a tool to administer a simple thwack to the head (or other readily available body part).

The use of Rod weapons is naturally available to White Mages, Red Mages, Black Mages, Blue Mages, Summoners, and Callers.