I've added an extra 2nd Stage Deck, formed by 7 new cards. A sort of customer expansion made by some users on BGG, if you find the game too easy, or just if you wanna add variability.

You should replace 7 cards from the 2nd deck with the new ones.

here the referral link:
https://boardgamegeek.com/thread/1356450/some-new-card-any-ideas

HAVE FUN