This is an acorn of mass destruction. It’s stored in a small box with room for six but only containing the one.
A strange, mystical box, with many rumours attached, that does not want to reveal its secret…
Walking through the alleys of the docks district of town, you hear an old, mad beggar calling out for alms. He claims to be a god, cast out from heaven and stripped of his powers. The party passes, tossing a few coppers to him. In thanking them, the madman refers to incidents in their childhood or distant past which would have been all but impossible for him to know.