Walking Ballista [Double Masters] Duels of the Planeswalkers Promos 2013 discard it into exile

discard it into exile

Artifact creature spells you cast have affinity for artifacts

Set: Legends Type: Instant Rarity: Uncommon Cost: {U}{U} Cast this spell only during an opponent's turn after their upkeep step

or did some inconceivable force shape the unshapable

Warm enough to incubate eggs or incinerate those who would eat them

Walking Ballista [Double Masters] Duels of the Planeswalkers Promos 2013 discard it into exileSet: Double Masters 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.