Hmmmmmmmmm
4 of july, 12 decks, 12÷4=3 so 3, .... 3 leafs .... clubs? Ok i am onto something here....
12 can be divided by 1 , 2 , 3 , 4 , 6 , 12 so 6 divisors, 6 .... 6 letters in hearts and spades ...... july, yeah july, that means 7, yeah 7, that's right
But what else? Well 3! is 1×2 ×3 so 6, 6 again? Yes that's it!
7 of Clubs
10 of Hearts
Queen of Spades
4 of Diamonds