Warren Instigator [Secret Lair Drop Series] Stronghold Nightmare's power and toughness are

Nightmare's power and toughness are each equal to the number of Swamps you control

As long as your devotion to green is less than five

or destroy target permanent if it is blue

Set: Revised Edition Type: Sorcery Rarity: Rare Cost: {3}{W} Destroy all lands

Set: Rivals of Ixalan Prerelease Promos Type: Legendary Creature — Elder Dinosaur Rarity: Rare Cost: {5}{U}{U} This spell can't be countered

Warren Instigator [Secret Lair Drop Series] Stronghold Nightmare's power and toughness areSet: Secret Lair Drop Series Type: Creature Goblin Berserker Rarity: Mythic Cost: {R}{R} Double strike Whenever Warren Instigator deals damage to an opponent, you may put a Goblin creature card from your hand onto the battlefield.