Rod of Summoning Lightning Elementals

Rod of Summoning Lightning Elementals: This device appears as a copper rod about ¾ inch thick and 2 feet long, tipped with a polished ball of amber. The rod will have a smooth, polished green surface (a thin coating of verdigris) but will not be pitted or damaged by the corrosion. To activate this device it must be held in the hand and the command words inscribed on the length of the rod must then be spoken, which requires a full round to complete.