Hi All.
I just recently bought a Svengali deck and have been working some of the routines with it. It came with two "extra" cards in it that are not mentioned or used in any of the routines: a blank card and a double-backed card (one side red, other side blue, both same pattern back as main deck)
I am wondering if it might be possible to point me in the direction of some routines that would use these in a Svengali?
Thanks!

-SilkBC