Shertset, Entombed Pharaoh

Creatures you control with Embalm or Eternalize get +1/+1.
As long as Shertset, Entombed Pharaoh is a Zombie, creature cards in your graveyard without Embalm have Embalm. The embalm cost is equal to the card's casting cost.
Commander embalm {2}{w}{u} ({2}{w}{u}, Exile this card from your graveyard or the command zone: Create a token that’s a copy of it, except it’s a white Zombie Noble God with no mana cost. Embalm only as a sorcery.)