Fusion

Fusion is a process used to strengthen your cards. Combined with Boosting and Mastery, card growth has several layers of depth when creating a Final Form (FF) card.

Fusiong allows you to remove cards 2 identical from your collection to create a strengthened version of that card of a higher rarity. Depending on if the cards have been boosted to max level and or mastered before fusing, a the strength of the final card can vary greatly.

In order to maximize card strength, you want to Boost a card to its maximum level and master the card fully before fusing it to the next rarity. Cards which are fused at maximum level provide 10% of their stats to the final card. otherwise only 5% is granted. While maximizing mastery provides a direct boost to the cards strength and increases the starting mastery of the final card.