Pollution Sire

Mutate 2 (If this creature would untap during your untap step, you may instead put two +1/+1 counters on it).
When Pollution Sire enters the battlefield or mutates, you may have target land become a Swamp.
"My dear brother Vezerath fails to realise that without the decay and disease my creations spread his would never win the battles they fight."
-Zxathreckan, Master of Corruption