Protect the Memory

Exploration Stage: Airship Dock
From: Mayor
Description: We need to protect your memory during the flight, since you not only turned out to be the Mystery Solver, but also agreed to go with Rayden. It's good that the City has given us many artifacts. One of them is Mnemosyne's Chalice. I've seen it nearby. Could you find it?
Completed: Mnemosyne's Chalice contains the water of eternal memory from the ancient goddess's spring. It will protect your mind. I'll give the chalice to Martha so she can enhance its effect.