Click button to open the interface.
Use summon rune to get hero’s card, there are different qualities for cards, equip relevant cards on hero to activate card’s combo skill, the skill can give hero’s attack/defense extra effect.
Refine: refine spare cards to get Braveness dust and Braveness crystal.
Use Braveness dust to improve card’s level（Coming Soon）
Use Braveness crystal to buy cards（Coming Soon）
Click class button and choose card tab.
Drag cards to unlocked card slot.
Hero 1st class transfer will unlock one card slot, 2nd transfer will unlock two card slot, and so on.
The 5th and 6th slot will come with more cards and spells in the future.