Advanced Necromancy

Non zombie creatures in your graveyard have Embalm {2}{w} ({2}{w}, Exile this card from your graveyard: Create a token that's a copy of that card, except it's a 2/2 black Zombie creature in addition to its other types. Embalm only as a sorcery.)

Zombie token creatures you control have Decayed.

Whenever you sacrifice a Zombie creature token, create a tapped 1/1 black Skeleton creature token with a corpse counter. If that creature would leave the battlefield, exile it instead of putting it anyw