Bracers of armor with that ability would be fine, although they would cost an additional 2,500gp instead of an additional 1,000gp to add the rhino charging ability.<br/><br/><br/>The main reason there's so many Ogres is because Riedra is the homeland of ogres, so the Riedrans tend to use Ogres as their expendable shock troops.  Ogres are taught from birth that their lives are worthless, and are religiously indoctrinated with the idea that an honorable death in combat will allow them to reincarnate as a superior sort of being.<br/><br/>Ogre Mages are simply discreetly treated like royalty, leading the vast majority of them to support the opression of Ogres in exchange for their own gilded cage.