Whilst in Amsterdam, watch out for the Ghost of Black Matthew...

In the 13th century, there was a shady lad by the name Matthew, a wandering magician and thief who filled his days gambling always winning by using trickery and dark magic. 

Eventually, his luck did run out when he tangled with the devil.  It is said that Black Matthew roams the streets all over Amsterdam hoping to start up a game and regain his luck.