How do you Upgrade Cards?

If there is a particular card you do not want to swap out of your deck for a stronger card there is always the opton of upgrading it. Cards can be upgraded by having duplicates of the said card, using the green trianglular fusion stones and red rubies, or by using coins.

To upgrade a card tap to enter the 'Deck' screen and then tap the card you want to upgrade within the 'Edit Deck' menu or while viewing your card collection. If you do not have the necessary materials required to complete the upgrade the 'Upgrade' button will show you what you need to collect before the upgrade can be completed.

If you do not have enough copies of a card to complete your upgrade, you can use Fusion Stones to craft your missing card(s). The cost in Fusion Stones depends on the rarity of the card.