You could often play this guy on Turn 2 with a Dark Ritual. That early in the game, that was often an unanswerable threat. You'd have to play two Lightning Bolts in a row, or deal damage to him in combat and Bolt him for the rest.
The really good removal at the time was Terror, which like Doom Blade, doesn't affect Black creatures. You pretty much needed to cast a Wrath of God to deal with him! Since it was so hard to answer, Juzan Djinn was one of the biggest threats in early Magic!
Today, a single copy of Juzam Djinn sells for over $1000 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 uses this card a lot. That's what has skyrocketed his price over the years. He's a really useful card, but you'll need thousands of bucks to shell out on a playset. That's even if you can find enough copies for sale... He's a Reserve List card that you probably should steer clear from unless you're looking to collect some super high-end Magic the Gathering cards!
Still, Juzam Djinn is an awesome creature, even if not by today's standards. He may be under-powered now. But in early Magic, this was a boss monster that everyone who played Black wanted to have!
Have you ever played Juzam Djinn?
~ Phoenix <3