Cards must be upgraded with Stardust and GQ, and time, here are the amount:
- STARDUST: is the experience obtained by players. It can only be obtained by playing battles.
- GQ: the juicy reward of each battle. Currently, it is the game's soft currency.
- TIME: the time it takes for cards to be upgraded.
There is a possibility of accelerating the time. Currently, only 2 accelerations are allowed per day, with the benefit of lvl up the cards.
- DISCLAIMER: When a card it's leveling up it can't be used.