A mysterious force wielded by CavemanJoe. Rumored to be more powerful than any weapon that exists on the Island1), and even more powerful than the Drive itself. It is theorized that the BanHammer works in such a way to control the forces of Improbability better than all Jokers put together.
However, no contestant has ever directly seen the BanHammer (or lived to tell the tale), so its existence is met with some skepticism.
It is also rumored that the hammer, when stirring tea with, sweetens it.2)