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 - $19.200
Lightly Played - $15.400
Moderately Played - $13.500
Heavily Played - $11.500
Damaged - $9.600
Near Mint Spanish - $19.200
Lightly Played Spanish - $15.400
Moderately Played Spanish - $13.500
Heavily Played Spanish - $11.500
Damaged Spanish - $9.600