The makeup of your battle deck is one of the most important factors to consider when heading into a battle. To view and modify your battle deck and cards, navigate to the Battle Deck screen.
From there, you can view your cards, upgrade them, and construct up to 3 different battle decks, each consisting of 8 cards each. Keep note of the individual power costs of your cards, denoted by a number on the corner of each card, and the overall average power cost of your deck.
Obtaining New Cards and Upgrading Existing Cards
By opening loot boxes, you will unlock not only Gold and Gems, but also new cards for your battle deck. If it's a new card it will be added to your inventory and will be accessible for your battle decks. If you already own the card, the new ones you obtain will be accumulated and utilized for upgrading that unit. Please note, the Gold cost and cards required to upgrade a unit to the next level will gradually increase with each subsequent level. Also, the rarer a card, the more expensive upgrading it is.
Rarity Level of Cards
There are 4 rarity levels, with the Common cards more likely to be found in a loot box than a Rare card, which is more likely to be found than an Epic and so on. The 5 levels in order of rarity (less rare to more) are:
- Common (grey border)
- Rare (blue border)
- Epic (orange border)
- Legendary (purple border)
In addition, new Hero units can be unlocked by purchasing them with Gold, once access has been gained based on your rank.