Walking Ballista [Secret Lair Drop Series] Phyrexian Dreadnought If opponent has no creatures

If opponent has no creatures

Set: EX: Emerald Type: Colorless Rarity: Secret Rare Retreat cost: Colorless

Set: Black & White: Base Set Type: Fire Rarity: Ultra Rare Retreat cost: Colorless

Set: Aether Revolt Prerelease Promos Type: Legendary Artifact Rarity: Mythic Cost: {5} Whenever you cast a spell

Walking Ballista [Secret Lair Drop Series] Phyrexian Dreadnought If opponent has no creaturesSet: Secret Lair Drop Series 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.