Silent Specter

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.)

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Onslaught

Flying
Whenever Silent Specter deals combat damage to a player, that player discards two cards from his or her hand.
Morph o3o
Bo
B (You may play this face down as a 2/2 creature for o3. Turn it face up any time for its morph cost.)