Chris Congreave's Omen is a self-working powerhouse of playing card mentalism with three jaw-dropping moments of magic

The use of dark blue represents the colors of a raven and night

inventions and influences

You can replace the chalk in seconds

Echo Book Test | Vincent Hedan (Numerology) Öl und Wasser Chris Congreave's Omen is aThe Echo Book Test is a project I kept secret for the last few years I use Echo when I want a personal impact; when I want an easy, foolproof book test; and when I want to involve the audience emotionally. But Echo is much more than a simple book test First of all, Echo is a normal book: anyone can read it without suspecting anything, in fact it's available on Amazon. In secret, Echo uses a classic principle by Larry Becker (which he allowed me to use