Whenever you cast a red spell, if Runaway Steam-Kin has fewer than three +1/+1 counters on it, put a +1/+1 counter on Runaway Steam-Kin. Remove three +1/+1 counters from Runaway Steam-Kin: Add {R}{R}{R}.
Near Mint Foil - $22,396.50
Lightly Played Foil - $21,276.70
Moderately Played Foil - $19,037.00
Heavily Played Foil - $16,797.40
Damaged Foil - $15,677.60