Walking Ballista [Double Masters] Shapeshifter You can only use each

You can only use each effect of "Primathmech Alembertian" once per turn

sacrifice the other

Set: Judge Gift Cards 2015 Type: Land Rarity: Rare {T}: Add {C}

put a card from your hand on the bottom of your library

Set: Alpha Edition Type: Enchantment Rarity: Rare Cost: {1}{U} You may have Copy Artifact enter the battlefield as a copy of any artifact on the battlefield

Walking Ballista [Double Masters] Shapeshifter You can only use eachSet: 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.