Dave J McWeasely
The Black Captain Commands
Play only if the WITCH-KING is in play.
First, either recruit two Nazgul in the Region containing the WITCH-KING, or move any or all of the Nazgul.
Then you may move or attack with an Army in the same region as the WITCH KING.
Since the witch king is a nazgul, a valid use is to move him and his buddies to a new location, where they can then immediately stage an attack, correct? That's a pretty good card then, since it messes up the turn-counting math of the free peoples player.