The protagonist moves forward, deeper into the Crystal Caverns, following the faint blue glow of the Key of Eternity. The path is treacherous, with jagged rocks and steep drops, but the protagonist is determined to reach their goal. As they walk, they hear a faint humming sound that grows louder with each step. Soon, they find themselves standing in front of a massive crystal door that pulses with a bright blue light. The humming sound is coming from behind the door.

The protagonist tries to push the door open, but it doesn't budge. Remembering the riddles from the library, they pull out the silver butterfly statue and command it to reveal its true form. The statue transforms into a silver key that fits perfectly into the keyhole on the crystal door. The door creaks open, revealing a massive chamber filled with even more crystals than before. In the center of the chamber stands a pedestal made of pure crystal, with the Key of Eternity resting on top.