Scent of Nightshade

Instant, 1B (2)
Reveal any number of black cards in your hand. Target creature gets -X/-X until end of turn, where X is the number of cards revealed this way.
Illus. John Avon

Gatherer Card Rulings [Nov 2009]

• 10/4/2004: You reveal cards, and thereby the value of X, on resolution.

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard
Printings (1/6)	Urza's Destiny (Common)