Oracle cards are like tarot cards’ younger, chiller cousin. They can show any imagery, and there’s more room for the person working with them to interpret their meaning. They’re a tool that can be used for introspection or, depending on your approach, divination. 
The oracle deck «Childhood» consists of 45 cards. When using oracle cards, I recommends that you go with your intuition. When you get a new oracle deck, you’re kind of learning a new language each time. So take time to observe and get to know the deck.