An old blueprint with rough sketches showing how to turn a stick and a rope into a weapon.
Wrinkled in places and stained with dirt, as if it had been studied in a hurry and under poor light.
It takes patience and at least a little skill to turn wood into a weapon.
Without it, you are just holding a stick and a rope. With it, you become a hunter.
In this world, knowledge can be more dangerous than the bow itself.