Nightmare

Creature - Nightmare Horse X/X, 5B (6)
Flying

Nightmare's power and toughness are each equal to the number of Swamps you control.¹
As the poisoned land spreads, so does the nightmare's rage and terrifying strength.
Illus. Melissa A. Benson

Gatherer Card Rulings [Nov 2009]

• 4/1/2008: If you control 0 swamps, then the Nightmare has 0 toughness and will be put into its owner's graveyard as a state-based action right before the next player gains priority.
• 10/1/2009: Nightmare's power and toughness changes as the number of Swamps you control changes.

Format Legality	Legal in Vintage, Legacy, Extended, Standard, MTGO Classic
Printings (12/72)	Magic 2010 (Rare) Tenth Edition (Rare) Ninth Edition (Rare) Eighth Edition (Rare) Seventh Edition (Rare) Classic Sixth Edition (Rare) → View All