Walking Ballista [Aether Revolt Prerelease Promos] 031 Set: Value Boxes Card type:

Set: Value Boxes Card type: Xyz/Effect Monster Rarity: Promo Attack: 2100 Defense: 1600 2 Level 5 Machine-Type monsters Once per turn: You can detach 1 Xyz Material from this card

As Overgrown Tomb enters the battlefield

or Aqua-Type monster from your hand

each page a lifetime

Walking Ballista [Aether Revolt Prerelease Promos] 031 Set: Value Boxes Card type:Set: 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.