LUCKO by Marvelous Effects - Trick
Marvelous-fx
With no complicated math or memory work, Lucko is incredibly easy to do and leaves an amazing souvenir for your spectator. There are no forces needed (within normal magic square limitations), so any number can be named.
Lucko comes complete with a fully routined performance from Matthew Wright which makes all the "dirty work" easy and logical.
Comes with 20 cards included.