Gilded Scarab

Hatch {u}{b} (Whenever you put this card from your library into the graveyard, you may pay {u}{b}. If you
do, then put this creature from the graveyard onto the battlefield.)
You may cast Gilded Scarab from your graveyard by milling three cards in addition to its other costs.
Even in the bleakest environments, life finds
a way.