Fusion

There are 3 modes of fusion in the game.

Status Enhance
By using one card of the same race or class you can improve a random stat. You can also use a joker card of that rarity in place of using a hero.

If you want to upgrade a specific stat like INT for example then you must use one of the Joker cards with that stat on them.

So for example to upgrade your legendary ice mage you could sacrifice a legendary fire mage and get a random stat increase or you could sacrifice your fire mage and an INT joke card to get INT to increase.

Alternatively you could sacrifice a joker card and an INT Joker card to increase your Legendary ice mages INT without losing a hero.

Skill Change
Skill change refers to a random change of special skill among special skill phase 1, 2, 3 & 4.

There are two ways to have a skill change, either through voluntary skill change or rarity upgrade. Please note that all skill change is associated with an element change.

For voluntary skill change, you may sacrifice a hero with same class and rarity or joker with same rarity. The phase number & element may change randomly while skill change is performed. Using an additional phase joker card can ensure the new phase number.

E.g. Phase 2 fire skill -> Phase 4 Ice skill.

Rarity Upgrade
Card undergo rarity upgraded will have a skill change + element change.