Card's are important to play rising star game every card has different properties but there is something that you can get without buying card's
Music lesson's
Music lesson's can reduce your burden if you are buying expensive skill cards to tackle with ego.at level 15 or with 1000 fans ego in the game start increasing and you get less starbits reward of each mission,to keep ego down you need skills which you can get from skills card and music lesson's
If you don't have starbits or hive to buy card there is a better way to get skill from music lesson's.it's only take's 1 hour per mission to complete music lesson.keep doing music lesson until get ego below 5% than start you regular mission to earn starbits.please remember don't do same mission again and again because it's decrease starbits reward and increase ego per mission.
music lesson skill points depend's on how much luck cards (luck) you have and every music lesson need different instruments card with luck (higher luck cards will get you more skill points per mission) if don't have instrument cards (luck) than just keep music lesson give you more skill point until buy instruments cards (luck) Visit F.A.Q to look which instrument fit for you'r music lesson.
why should we buy instruments cards (luck) rather than buying skills cards?
If you will buy skills cards you need to hold them permanent to take advantage of skills.
If you will buy instrument cards the earned skills will be permanent and you can sell your instrument cards after getting enough skills from doing music lesson.
to have much cards isn't important to have right is important.
ego from missions is permanent so better is to earn permanent skills to keep ego balanced.
when you have gained more skills from music lessons, sell your instrument cards and buy some fan cards.it will definitely increase your starbits reward per mission.