Nightmare [Collectors' Edition] Cat When Elder Land Wurm blocks

When Elder Land Wurm blocks

Set: Prophecy Type: Enchantment Rarity: Rare Cost: {1}{U} Whenever a player puts a nontoken creature onto the battlefield

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

If they exist

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

Nightmare [Collectors' Edition] Cat When Elder Land Wurm blocksSet: 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.