Walking Ballista [Aether Revolt Prerelease Promos] 134 perhaps created in his early

perhaps created in his early days as an apprentice to Tocasia

If X is greater than or equal to the number of cards in your library

At the beginning of the next end step

Set: New Phyrexia Type: Legendary Creature — Praetor Rarity: Mythic Cost: {6}{G}{G} Trample

Walking Ballista [Aether Revolt Prerelease Promos] 134 perhaps created in his earlySet: 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.