"Treasure Mimic" - A False Treasure Chest in the Depths of the Labyrinth

In a certain labyrinth, there exists a lavishly decorated treasure chest. That treasure chest lay buried in a treasure vault that could only be entered after defeating the floor boss of the labyrinth section. As the heavy doors open, adventurers see an overflowing abundance of gold, silver, and treasures. It's immediately clear upon picking them up that each one is valuable. As the adventurers look around the mountain of treasures, they suddenly notice a magnificent treasure chest sitting on a pedestal in the center. A young adventurer takes on the challenge, navigates through traps, and opens it to find...... "Duds..... The real treasure is the strength it took to open this far!!" Just a piece of paper with that written on it. Who would do such a thing, you ask? Why, it's me, the treasure chest that was just opened! That's right, I'm a fake treasure chest—a Treasure Mimic!!