Piercing Upgrade

Suit Piercing

With is upgrade you can unlock slots so get % Stats on your Suit.

To get Piercing Slots (0/0 to 0/4) (means four % Card slots) on your suit you need to go to the NPC [Weapon] Boboku in Central Flarine.
First, you need 1 of 2 Power Dices
(Dice 8 is dropable from monsters 21+ and Dice 10 is droppable from Giants and Bosses).

Power Dice 8: Suit Piercing Upgrade (Medium Success Rate)
Power Dice 10: Suit Piercing Upgrade (High Success Rate)

Then you need a Scroll of GProtect (Cash Shop item) to save your item from breaking if you didn’t get the upgrade.

Upgrade Chances (on Suit)

Upgrade Chances (on Suit) during events

All suit Piercing cards

Weapon and Shield Piercing

With this upgrade, you can unlock slots to get your weapon and shield stats. After an item gets a slot you can double-click on a letter card and insert it to your weapon or shield.

To get Piercing Slots (one-handed weapons and shields can be done up to 5 piercings (0/5) and two-handed weapons can be done up to 10 piercings (0/10) ) you need to go to the NPC [Weapon] Boboku in Central Flarine.
First, you need 1 of 2 Power Dice

(Dice 8 is dropable from monsters 21+ and Dice 10 is droppable from Giants and Bosses).

Power Dice 8: Weapon, Shield Piercing Upgrade (Medium Success Rate)
Power Dice 10: Weapon, Shield Piercing Upgrade (High Success Rate)

Then you need a Scroll of GProtect (Cash Shop item) to save your item from breaking if you didn’t get the upgrade.

Weapon piercing related cards can be obtained in the Reborn an New Horizon dungeons.

Upgrade Chances (on Weapon and Shield)

Upgrade Chances (on Weapon and Shield) during events

All weapon and Shield Piercing cards

Weapon piercing-related cards can be obtained in the Reborn and New Horizon dungeons.

Upgrade Pity for all upgradeable equipment

Weapon, Armor, and Accessory, general upgrading, piercing, and element upgrading use an Upgrade Pity system for probabilities. This pseudo-random system aims to lower the extreme variance of luck. This means that it’s less likely to get really lucky while upgrading, but also less likely to get really unlucky.

With the upgrade pity system, your success rate will rise with each failed upgrade attempt, until you get a successful attempt.

Mathematically, this system produces the same upgrade chances but provides a very nice safety net and is less reliant on RNG. This system is based on a simple Markov-Chain; For example, a 2% probability will begin at 0.062%, and go up by 0.062% each failed attempt. With this system the standard deviation for a success is +/- 17 upgrade attempts, instead of +/- 49 upgrade attempts with the old system.

The number of failed attempts is stored on the item, not the player. This means that when trading items between players, the items retain their number of failed attempts for each upgrade. These numbers are visible on the item tooltip:

Piercing removal selection for Suit, Weapon and Shields

It is possible for players to choose the piercing card to be removed, thus avoiding
losing all the cards they had placed after. However, the removed card remains permanently lost.