Gravetiller Fungi

Deathtouch, Defender
When Gravetiller Fungi enters the battlefield, search
your library for up to three creature cards and put them
into your graveyard.
{4}{b}{g}: Return target creature card from your
graveyard to the battlefield with a finality counter on it.
This ability costs {1} less to activate for each creature
card in your graveyard.
If you are what you eat, these are long dead.