Nidus

Deathtouch, Evolve, Afflict 1
{1}{b/g}{t}: Put a -0/-1 on each creature opponents control without flying, if 5 creatures were effected, put five 2/1 Green and Black Fungus Creature Tokens onto the battlefield tapped.
{6}{b/g}{b/g}: Sacrifice Nidus, put ten 3/3 Green and Black Fungus Creature Tokens with evolve onto the battlefield.