In a mysterious cave, a traveler found 16 coins scattered on the ground. Each coin shimmered in the dim light, revealing intricate engravings. The traveler’s curiosity was piqued by the unusual markings on the coins. As the traveler picked up the coins, a faint whisper echoed through the cave, sending shivers down their spine. With trembling hands, the traveler realized that the 16 coins held a secret power waiting to be unlocked.