The Silver Tarot Cards can be found in Chapter 4, in the Mamon Mine. This special weapon has a unique mechanic not found anywhere else in the game, making it quite useful all the way up until the final boss.

Preparations

• Both Meena and Maya should be around level 10. Grind a bit outside the town of Mamon to get there
• Gear up in Havre León. A Feathered Cap for each sister and the best weapon you can buy at that moment should be enough.

Finding the Mamon Mine

Following the main story of Chapter 4 until you reach Havré León, go to the prison and you’ll find a man telling you about how there’s gunpowder in the Mamon Mine that you could use. You’ll have to go there to find the Silver Tarot Cards.

To reach the town of Mamon, just head west of Havre León and follow the coast. Skip the first small peninsula and walk north on the second, bigger one. At the northwestern extreme of the continent you’ll find the town of Mamon and the mine.

Getting the Silver Tarot Cards

Rest in town if you need to and get inside the mine, entering through the northeastern building, which has an open door that lets you get in the mine.

Most enemies from here should give you much trouble, except the Frolickers, as they usually come in big groups and cast Dazzle on your party. 

From the mine’s entrance, walk straight north and turn west where the floor ends, and open the chest to the left of a small pond. The Silver Tarot Cards are inside.

Congratulations! This weapon can only be wielded by Meena, and only she can also use it as an item. Using it allows you to trigger a random effect, depending on which card Meena draws. Some of them can be extremely powerful, but one of them can injure your own party.

Additionally, they can also be used outside of battle to let Meena read your fortune. This has no other effect than to trigger some dialogues from her.

 List of Silver Tarot Cards’ random effects

Note: using the Silver Tarot Cards two times in a battle will raise the chances of drawing the Fool card to 50%.