The Stone

The Stone is a magical artifact and a plot element item in the animated movie The Secret of NIMH. An amulet, that can project magic energy from within it, the Stone falls under the possession of many rodent heroes, from Nicodemus to Mrs. Brisby, and last to Justin, each one of them using it to restore their domestic establishment. The Stone also makes an appearance in Heroes vs. Villains, first possessed by Nicodemus, and then by Mrs. Brisby for the rest of the war.