Description
| Set: | Mystery Booster 2 |
| Type: | Artifact Creature Construct |
| Rarity: | Rare |
| Cost: | {X}{X} |
Walking Ballista enters 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.
