Nightmare [30th Anniversary Edition]Set: 30th Anniversary 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.

Characters can explore the setting over the course of four adventures

double its controller's life total

Whenever Ancient Brass Dragon deals combat damage to a player

Set: Alpha Edition Type: Enchantment — Aura Rarity: Common Cost: {G} Enchant land

Set: Sword & Shield: Rebel Clash Type: Psychic Rarity: Secret Rare Retreat cost: Colorless

{2}{W}: Choose a color

Find Center can't be defended by cards with [1 Resource] cost less than the number of chain links you control

The same is true for creature spells you control and creature cards you own that aren't on the battlefield

Set: Black & White: Boundaries Crossed Type: Water Rarity: Common Retreat cost: Colorless

Set: World Championships 2013 Type: Item Rarity: Rare

Set: XY: Base Set Type: Psychic Rarity: Promo Retreat cost: 2

Set: HeartGold & SoulSilver: Undaunted Type: Water Rarity: Common Retreat cost: Colorless