The Binding Of Isaac Four Souls Cathedral MatThe Binding of Isaac: Four Souls Cathedral Mat is a large play mat designed with 4 players in mind. The Binding of Isaac: Four Souls Cathedral Mat is a large play mat designed with 4 players in mind. This playmat features an authentic Binding of Isaac cathedral floor pattern with holy water and other helpful Four Souls details for gameplay. Upgrade your playing table with a much more attractive surface that will also help keep you organized.