Walking Ballista - Aether Revolt #181

Walking Ballista

Set: Aether Revolt (AER)
Collector Number: 181
Type: Artifact Creature — Construct
Rarity: Rare
Mana Value: 0.0

This creature enters with X +1/+1 counters on it.
{4}: Put a +1/+1 counter on this creature.
Remove a +1/+1 counter from this creature: It deals 1 damage to any target.