Crystalline Crawler

Crystalline Crawler

Artifact Creature - Construct | Power/Toughness: 1 / 1 (CMC 4)
Converge -- Crystalline Crawler enters the battlefield with a +1/+1 counter on it for each color of mana spent to cast it.
Remove a +1/+1 counter from Crystalline Crawler: Add one mana of any color.
{T}: Put a +1/+1 counter on Crystalline Crawler.