Sawtooth Thresher

Sawtooth Thresher

Artifact Creature - Construct | Power/Toughness: 1 / 1 (CMC 6)
Sunburst (This enters the battlefield with a +1/+1 counter on it for each color of mana spent to cast it.)
Remove two +1/+1 counters from Sawtooth Thresher: Sawtooth Thresher gets +4/+4 until end of turn.