The Mycellium Heart

The Mycelium Heart enters the battlefield tapped.
{t}: Add {c}.

As long as you control five or more lands, lands you control have “(t), Add one mana of any color.”

At the beginning of your upkeep, you may choose target land. That land becomes a Swamp and a 1/1 Molded Horror. (It also loses all other abilities, names, and text)


“The mold doesn’t stay in the house. It finds roots. It takes hold.”