Bozak, Lich Apprentice

Undergrowth - As you cast this spell, you may destroy all creature you control, if you do, create a 1/1 black and green Insect creature token for each creature card in your graveyard.
{b/g}, {t}: Create a 1/1 black and green Insect creature token.
Sacrifice ten creatures: Return all creatures from your graveyard to the battlefield under your control.