Hatchery Spider [Guilds of Ravnica Prerelease Promos]Set: Guilds of Ravnica Prerelease Promos Type: Creature Spider Rarity: Rare Cost: {5}{G}{G} Reach Undergrowth When you cast this spell, reveal the top X cards of your library, where X is the number of creature cards in your graveyard. You may put a green permanent card with mana value X or less from among them onto the battlefield. Put the rest on the bottom of your library in a random order.