Nightmare [Alpha Edition] Tribal Instant If you sacrifice an Island

If you sacrifice an Island this way

When Linvala enters the battlefield

Set: Seventh Edition Type: Creature — Bird Rarity: Rare Cost: {G} Flying

Set: Judge Gift Cards 2009 Type: Instant Rarity: Rare Cost: {B} Add {B}{B}{B}

that's something no horse can change

Nightmare [Alpha Edition] Tribal Instant If you sacrifice an IslandSet: 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.