Game Preserve [Mercadian Masques] Treefolk These mighty bulwarks thwart ground-based

These mighty bulwarks thwart ground-based troops

add this card's effects to that spell

When Regisaur Alpha enters the battlefield

Set: Ravnica: City of Guilds Type: Artifact Rarity: Common Cost: {2} {1}

Set: Aether Revolt Prerelease Promos Type: Creature — Human Warrior Rarity: Mythic Cost: {3}{R}{R} Double strike

Game Preserve [Mercadian Masques] Treefolk These mighty bulwarks thwart ground-basedSet: Mercadian Masques Type: Enchantment Rarity: Rare Cost: {2}{G} At the beginning of your upkeep, each player reveals the top card of their library. If all cards revealed this way are creature cards, put those cards onto the battlefield under their owners' control.