How can you copy a card from your deck?

Is there a possible way for you to have a copy of a card of your choice in Night of the Full Moon? There's a feature in the game that provides you with a page that lets you do this

If you want to get an extra copy from your deck, you may sometimes encounter Peri’s whisper. All of the choices let you copy 1 card from your deck; however, you’ll lose either health, action points, or receive prank cards. This might provide you with some disadvantages so think carefully if you want to use this.