Hollow Specter | Magic: The Gathering
Formats Hollow Specter is Legal in
Official Oracle Text for Hollow Specter
Whenever Hollow Specter deals combat damage to a player, you may pay . If you do, that player reveals X cards from his or her hand and you choose one of them. That player discards that card.
Official Rulings for Hollow Specter
10/4/2004 : X can be zero, but then that player discards nothing.