10 Incredible Technologies You Can Never Use
Mithridatium is known as an antidote to every single poison on the planet, plus a cure to other ailments. It is super medicine, basically. However, the 36 ingredients required to make it are difficult to come by, and the original recipe has been lost.
Greek Fire was pure devastation on the battlefield. During ancient times, armies would make use of the flammable material to light entire cities and people on fire. Today, the recipe has been hidden away.