The Gill-man, Black Lagoon

Swampwalk, menace
The Gill-man's power is how many Swamps and Forests you control in your graveyard. Other non-human creatures get +2/+2.
{b}{b}, {t}: Sacrifce a land you control, The
Gill-man gets a +1/+1 counter.
{g}{g}, {t}: Return a land card from your graveyard
to the battlefield tapped, you lose 2 life.