Nightmare [Unlimited Edition] Aether Revolt if you didn't activate a

if you didn't activate a loyalty ability of a planeswalker this turn

) As Overgrown Tomb enters the battlefield

These spirits of the air are winsome and wild

Exile Eldritch Evolution

They become 5/5 Elemental creatures with flying and haste until end of turn

Nightmare [Unlimited Edition] Aether Revolt if you didn't activate aSet: Unlimited Edition Type: Creature Nightmare Horse 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.