The Devil's Hammer in "Metaphorical Fantasy: ReFantazio" is a special prop in the game. If you want to get this Devil's Hammer, you can go to the ancient city of Martira during the day on July 9, and then go You can get it by talking to the guard in front of the city gate in the northeast of Cleante City.
How to get the Hammer of Metaphoric Fantasy
On July 9th, during the day, in the ancient town of Martila, on the west side of the stepped commercial street, talk to the soldiers on guard and choose the face stone to get MAG.
In front of Cleante City, in front of the northeastern city gate, talk to the guard outside the gate to obtain the Hammer of Demonic Evil.