How those Blackstar works:

Every card has 4 attributes:

S - Speed
P - Power
E - Energy
D - Diplomatic

Those 4 attributes are very important to protect your own City as part of your Civilization.

Speed - This is the speed how fast this Hero/spaceship can move. How higher the speed how more he can move in the galaxy.

Power - This is the straight of your character. This is very important to attack. If your Power is low and you are being attached by another Civilization then it is possible that your cargo is being stolen.

Energy - This is infact how much you can earn during the day. How higher the energy how more Blackstar coins you can earn. If you meet another Civilization that is a ally then your number of Blackstar coins earned will increase a lot based on your diplomatic skills.

Diplomatic - This allow you to make trade deals with other Civilizations and planet to optimize your reward.

The price for the cards will be low for the early players but there will be a limit in the amount of certain cards. The leaders of every civilization return a lot more profit, or stronger then items that will be released in a later stage. During the session packs there will be really some unique cards that will give the gamer a lot of advantage against other players.

There is a insurance cost to keep your army fit, this will cost you a specific amount of Blackstar coins. The first cards will all have a life insurance so no extra cost will be involved there.

Watch out, as said before it is possible that other people steal your cargo, so basically they will steal some blackstar coins from you when you don't protect your goods.