Nightmare [Classic Sixth Edition] Wizards Play Network 2012 Set: Odyssey Type: Land Rarity:

Set: Odyssey Type: Land Rarity: Uncommon {T}: Add {R}

This effect can't reduce the mana in that cost to less than one mana

a legendary 4/4 red Dragon creature token with flying

They found something far greater

Nightmare [Classic Sixth Edition] Wizards Play Network 2012 Set: Odyssey Type: Land Rarity:Set: Classic Sixth Edition Type: Creature Nightmare Horse Rarity: Rare Cost: {5}{B} 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. As the poisoned land spreads, so does the nightmare's rage and terrifying strength.