Creature — Specter 2/2, 1BB (3)
Rare
Flying
Whenever Hollow Specter deals combat damage to a player, you may pay {X}. If you do, that player reveals X cards from his or her hand and you choose one of them. That player discards that card.
Illus. rk post

10/4/2004: You decide on the value of X and pay {X} during resolution.
10/4/2004: X can be zero, but then that player discards nothing.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Classic (MTGO)
Legal in Commander