Nightmare [Alpha Edition] Set_Khans of Tarkir Promos where X is the difference

where X is the difference

if enchanted creature has flying

and the second player controls the first player during the first player's next turn

Set: Beta Edition Type: Instant Rarity: Common Cost: {X}{U} Counter target spell unless its controller pays {X}

Nightmare [Alpha Edition] Set_Khans of Tarkir Promos where X is the differenceSet: Alpha 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. The Nightmare arises from its lair in the swamps. As the poisoned land spreads, so does the Nightmare's rage and terrifying strength.