Can I make my heroes more powerful? How can I improve the level of my Heroes?

In order to level-up your Heroes you will need to collect several times the same Hero.

Heroes will need a specific amount of cards to level up.

Adding to the right amount of cards, you will also have to use Gold.

Once your Hero is ready to be levelled-up, you will see a button under it telling you about it.

Please note that each Hero has a different maximum rank.