Nightmare [Collectors' Edition] Cat Sacrifice Oblivion Stone: Destroy each

Sacrifice Oblivion Stone: Destroy each nonland permanent without a fate counter on it

The Patriarch is long dead

−6: Separate all permanents target player controls into two piles

if there are no Zombies on the battlefield

Nightmare [Collectors' Edition] Cat Sacrifice Oblivion Stone: Destroy eachSet: Collectors' 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.