These types of treasures are often referred to as: Existential Treasure.
Many powerful guilds have one, and they are usually the highest-level treasures that have some attack capability, as they are often used to prevent other powerful guilds from attacking you.
The fear of the uncertainty of what might cause one of these treasures in action makes them great treasures to deter.
For example, the Kingdom to which Angelic Wave belongs has certain items called "Runes". Although they have others, these are the most powerful deterrents because they have a ridiculously high power and can do many things.
What happens when a guild or Kingdom loses its deterrent item? Not only do they lose real power, but at the state level and in the world, they decline drastically as a major power and become a small rabbit that can be destroyed at any time.
