This material is challenging. Lennart Green is a card master and his unique thinking really shines through. The FISM Act on is the best item of the whole set. I remember watching this on World's Greatest Magic 4. It honestly looks impossible and at first trying to execute it might feel that way. The other item that I like is the angle riffle shuffle. I love this shuffle and it is very deceptive and once again, a challenge. If you like card magic and want to perform some deceptive but challenging material then these videos would be a good investment