The well of many worlds was a legendary, wondrous item that had an effect similar to a rift gate. The well of many worlds was similar in appearance to a portable hole. It was a fine black cloth, with a softness similar to silk, typically folded up like a handkerchief. When unfolded it had a circular shape, 6 feet (1.8 meters) in diameter. By unfolding this object upon a solid surface, one could open a two-way portal to another planet or plane of existence. The planet or plane that a well of many worlds opened to was different each time it was used. Its portal could be closed by taking hold of the cloth's edges and folding it up. After use, one had to wait one to eight hours before they could open another portal.