Nightmare [Beta Edition] Modern Event Deck 2014 Tokens When Ancestral Knowledge enters the

When Ancestral Knowledge enters the battlefield

Change the text of target permanent by replacing all instances of one color word with another or one basic land type with another until end of turn

if it's not that player's turn

Set: Alpha Edition Type: Instant Rarity: Rare Cost: {W} Target spell or permanent becomes white

Set: Rivals of Ixalan Prerelease Promos Type: Creature — Merfolk Shaman Rarity: Rare Cost: {3}{G} Whenever World Shaper attacks

Nightmare [Beta Edition] Modern Event Deck 2014 Tokens When Ancestral Knowledge enters theSet: Beta 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.