You can now do special things to your Suit (Chest Armor) through Piercing. Piercing requires a Power Dice 8, 10, or 12 (The higher the Power Dice, the better chance of success), a Chest Armor, and possibly a card. To Pierce your Suit, go to an Armor merchant and click on him. Select the Pierce option and you'll be given a box that isn't very descriptive. In the message box will be three boxes. In the top box, put the Chest Armor that you wish to pierce. In the middle box, put the Power Dice. The last box is optional. You can place a Gprotect scroll (cash item) to protect your suit from breaking or you could also leave it blank. Note that Gprotect scrolls don't guarantee success, it only protects your suit from breaking.
If the process suceeds, your armor will be given one slot wherein you can place a card, granting your armor special properties. If the process fails, however, you will lose your Chest Armor, your card, AND your Power Dice! You can pierce something up to a maximum of four times.
Here is a chart of the cards and their effects in pierced Suites.