Consuming Sepulcher

({t}: Add {b} or {g}.)
Consuming Sepulcher enters the battlefield
tapped unless there are two or more creature
cards in your graveyard.
Undergrowth — {2}{b}{g}: Exile target creature card
with mana value X or less from your graveyard,
where X is the number of creature cards in your graveyard. Consuming Sepulcher becomes a copy
of that card until end of turn. It's still a land.