Pratt, the Plague Doctor

Infect
When Pratt enters the battlefield, look at the
top four cards of your library, put one into
your hand and the rest into your graveyard.
{b/g}{b/g}, Pay 3 life: Create a 1/1 black and green
Saproling creature token with Infect for each
creature card in your graveyard.
It's not my fault...