Cards

As in Ragnarok Online, monsters drop cards with special attributes. These cards can be applied to specific types of equipment for impressive bonuses.

Card System
The card system interface can be opened through its interface icon on the bottom right of the screen, above job experience.

In this interface you can enchant a card or card slot to an item, split cards you don't need to receive card upgrade materials, upgrade cards, and add cards to your collection.

Enchant
The enchant option allows you to open locked card slots (200 Diamond for first slot & increasing by 50 Diamonds for each slot after, max 4) an open MvP card slots (1299-3999 Diamond). Once the card slot is open, you can enchant the equipment by selecting the card you wish to apply. Click the orange + in the empty card slot to apply a card from the available cards highlighted in the lower portion of the interface.

Split
Splitting cards is used to break down unwanted cards into materials used for upgrading cards. Current cards will be shown in the right side menu, and when they are selected you will be prompted to confirm decomposition.

Upgrade
Upgrading cards provides you with additional stats, frequently defense for armor or ATK/MATK for weapon cards, to cards that you have in your inventory or equipped in a card slot. The materials for upgrading cards are set in levels, with 1-6 level upgrades requiring Dust of Card. Dust of Card is obtained from low level cards. Level 7-9 requires Essence of Card, which is obtained from higher level 3 and 4 star cards. Levels 10 to 13 require Soul of Card, which is obtained from high level cards such as boss cards. Success rates are 100% for 1-6, and failure rates increase as card level increases.