I love a good paradox. They’re the brain twisters for the intelligent, and also philosophy that everyone can think about. Integrate a good paradox into a narrative and you’ll effortlessly engage your reader or viewer as they ponder over the ideas and theories that you’re throwing at them.
I’ll try and explain this simply because it’s a complex system to describe, but please be aware that it quickly becomes a very familiar system; by using an item, a gauge attached to that item starts to fill up. Once it fills up completely it “bursts” and that item is now useless for the rest of the dungeon. But once you’re out of the dungeon by going to the blacksmith it is now possible to power up that item and start using it again.