u/EpicSword16

So in my campaign, I have this powerful pair of keys that activate something when intertwined and inserted into a device of some kind, but I don't know what yet. My players are about to reach the point where I owe them an explanation for what these keys do. The cult is trying to just take over the world, but I really want a unique idea for what this pair of keys activates, besides just a "powerful sword" or a really powerful bomb or something.