And with teleportation or boots of levitation, you can probably move the Warlocks around.

Man, how many times have I started a map and never finished it? When you get to the terrible Necromancer, and you don't know where to find his wings, you have to kill him so he doesn't steal any more castles, and the question of the 200,000 black dragons remains unanswered.

And somewhere the author wrote that there are several ways to get to him, but it turns out that if you don't find the wings, you're stuck...