Fungal Antople

Fungal Antople enters the battlefield tapped. Sacrifice it unless you have a card named Antople Forest in your graveyard.
{t}: Add {b}{g}
{b/g}{b/g}, {t}, Sacrifice a creature: Put a +1/+1 onto
target creature. Target player loses 1 life.
From death, life. From life, death. And so the cycle is endless.