Today, a single copy of Juzam Djinn sells for over $400 USD! That doesn't seem worth the price tag at all if you're thinking of playing him. However, the "Old School Magic" format which uses cards from only 1993 and 1994 likes this card a lot. That's what has skyrocketed his price over the years. He's a really useful card, but unless you have $1200+ to shell out on a playset, he's a reserve list card that you probably should steer clear from.