Nightmare

Creature - Nightmare Horse X/X, 5B (6)
Flying (This creature can't be blocked except by creatures with flying or reach.)
Nightmare's power and toughness are each equal to the number of Swamps you control.¹
The Nightmare arises from its lair in the swamps. As the poisoned land spreads, so does the Nightmare's rage and terrifying strength.
Illus. Melissa Benson

Crystal Keep Rulings Summaries

• If you run out of Swamps, the Nightmare dies as a state-based effect (see Rule 420) right before the next player gains priority. [D'Angelo 1999/05/01]
• Note - This card was creature type "Nightmare" until Oracle 2007/10/01, when it became "Nightmare Horse".
• Note - The Beta printing version of this card has a blotch over the word Swamp that is not in any of the other printings.

Format Legality	Legal in Vintage, Legacy, Extended, Standard
Printings (11/60)	Tenth Edition (Rare) Core Set - Ninth Edition (Rare) Core Set - Eighth Edition (Rare) Seventh Edition (Rare) Classic Sixth Edition (Rare) Revised Edition (Rare) → View All