All players must discard a champion from their pool; undead are immune to this event. If a player has no champions in his pool, he must discard two cards from his hand. (Harmful)
Copyrights:
TSR
Wizards of the Coast
When Wail of the Banshee is played all players select a legal target champion in their own pool and place it in the discard pile. Champions immune to events are not considered legal targets. If a player has no champions (legal or otherwise) in his pool then that player must discard 2 cards from his hand. If a player has only immune champions in his pool he completely escapes the effect of Wail of the Banshee.
This event works well in any undead theme or Ravenloft world deck. Add some similar cards such as Slave Revolt! (126/4th), Death Spell (377/4th), Death Fog (376/4th), Mindkiller (56/UD) or Elemental Swarm (52/UD) and watch as your opponents scramble to keep champions on the table.
I have heard that the Banshee is the restless spirit of an elven maiden. I do not know the truth of this, but I have heard the greatest elven bards of Evermeet and there is no doubt in my mind that the wail of the Banshee has much in common with those minstrels. Both can break a man's heart, but only one will steal his life.
-Lord Bo, Barbarian Knight of Icewind Dale.