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.
NM-Mint Foil - $34.10
Lightly Played Foil - $32.40
Moderately Played Foil - $30.70
Heavily Played Foil - $27.30
Damaged Foil - $22.20
NM-Mint Foil Non English - $34.10
Lightly Played Foil Non English - $32.40
Moderately Played Foil Non English - $30.70
Heavily Played Foil Non English - $27.30
Damaged Foil Non English - $22.20