Nightmare [30th Anniversary Edition] DP13 Legend has it that Serpents

Legend has it that Serpents used to be bigger

Set: Skyridge Type: Water Rarity: Rare Retreat cost: Colorless

Metalcraft — {T}: Add {C} for each Urza's land you control

Darkness Rarity: Rare Retreat cost: Colorless

Set: XY: Fates Collide Type: Fairy Rarity: Ultra Rare Retreat cost: Colorless

Nightmare [30th Anniversary Edition] DP13 Legend has it that SerpentsSet: 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.