A casting deck is a tool that actors use to help them prepare for upcoming auditions. It is a way for an actor to keep track of the various roles they are auditioning for, as well as the specific requirements for each role.
A casting deck usually contains headshots of the actor, as well as their resume and any other relevant information. This information can be used by casting directors to help them make their decision about who to cast in a particular role.
Casting decks can be extremely helpful for actors who are trying to land a particular role. They allow the actor to keep all of the necessary information in one place, and they can also be used to remind the actor of what they need to do in order to prepare for an upcoming audition.