Walking Ballista (Prerelease) [Aether Revolt Prerelease Promos] BT9-100 reveal Progenitus and shuffle it

reveal Progenitus and shuffle it into its owner's library instead

you may play a land or cast a permanent spell from among cards in your graveyard that were put there from your library this turn

Against the implacable will of Phyrexia

Empires rise and fall

Walking Ballista (Prerelease) [Aether Revolt Prerelease Promos] BT9-100 reveal Progenitus and shuffle itSet: Aether Revolt Prerelease Promos Type: Artifact Creature Construct Rarity: Rare Cost: {X}{X} Walking Ballista enters the battlefield with X +1 +1 counters on it. {4}: Put a +1 +1 counter on Walking Ballista. Remove a +1 +1 counter from Walking Ballista: It deals 1 damage to any target.