Cards can be upgraded from your house. A level 1 card can only be upgraded 5 times. Once you reach X/Y (or more), you can upgrade the card to level 2. This will make the card stronger and open up more upgrade slots.
Cards can be upgraded from your house. A level 1 card can only be upgraded 5 times. Once you reach X/Y (or more), you can upgrade the card to level 2. This will make the card stronger and open up more upgrade slots.
Thanks! So, the level 2 upgrade will only be available if I've done the first five level 1 upgrades, and have met the Y-quota of required cards?