Silent Specter is a rare Creature — Specter card from Onslaught (ONS), collector number 169. Current market price: $0.51 (foil $9.99), TCGplayer market prices via Scryfall.
Flying Whenever this creature deals combat damage to a player, that player discards two cards. Morph {3}{B}{B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)