The Corrupted One

Trample
Players cannot play lands.
At the beginning of your upkeep, each player sacrifices each tapped land they control.
Exile a land card from a graveyard: Add one mana
of any colour to your mana pool.
"Its roots spread across Ravnica like a plague, they
taint the soil and choke the trees, only the Golgari are
so cruel as to create such a horror." -Trostani