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.
Near Mint - $8.50
Lightly Played - $8.00
Moderately Played - $6.50
Heavily Played - $5.25
Damaged - $3.50
Near Mint Non-English - $8.50
Lightly Played Non-English - $8.00
Moderately Played Non-English - $6.50
Heavily Played Non-English - $5.25
Damaged Non-English - $3.50