Iconoclast Cultivator

As long as you control Iconoclast Cultivator, germ creatures you control do not go to their graveyard while their toughness equals 0.
Germ creatures you control have "{t}: Sacrifice this creature, gain 2 life."
"We can amass exponentially more pathogens when adding the right chemicals and magical ingredients to their diet. Ironically, we've cured a couple terminal diseases as a result."