while completing the game, i have discovered a glitch allowing you to get infinite cards.
here is how to do it :

- complete a game, i recommend you do 1 or 4 million
- when you open a card pack, DO NOT press continue, instead, alt+f4 your game.
you will claim your cards, but the game remains uncompleted!
- go back to your game and claim your cards again, be sure not to press continue.

do this as much times as you want. i find it a bit broken as it allows you to essentially get infinite sardines, omega items...