Playing steemmonsters like crazy

Been playing one of my dads steemmonster decks. Its real fun but a lot harder then it was a while back. My dad even says so. He says people have been buying better cards. So i told him to byy yhem to. But he says no for right now. Just to get one every now and then. So he says if i post or steemmonsters cards i can make money here easy. He also said if i make money now it will maybe be eorth more when i grow up. Heres some cards