At the beginning of each player's upkeep, that player sacrifices a non-Zombie creature.

At the beginning of the end step, if no creatures are on the battlefield, sacrifice Call to the Grave.

Skeletons you control and other Zombies you control get +1/+1 and have deathtouch.

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)

Create X tapped 2/2 black Zombie creature tokens.

Geralf's Messenger enters the battlefield tapped.

When Geralf's Messenger enters the battlefield, target opponent loses 2 life.

Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Deathtouch

Whenever Grave Titan enters the battlefield or attacks, create two 2/2 black Zombie creature tokens.

Gravecrawler can't block.

You may cast Gravecrawler from your graveyard as long as you control a Zombie.

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

When Lifebane Zombie enters the battlefield, target opponent reveals their hand. You choose a green or white creature card from it and exile that card.

Other Zombie creatures get +1/+1.

{1}{B}, {T}: Return target Zombie card from your graveyard to your hand.

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Whenever a Human deals damage to you, destroy it.

Other non-Human creatures you control get +1/+1 and have undying. (When a creature with undying dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Risen Executioner can't block.

Other Zombie creatures you control get +1/+1.

You may cast Risen Executioner from your graveyard if you pay {1} more to cast it for each other creature card in your graveyard.

You may pay {0} rather than pay the mana cost for Zombie creature spells you cast.

As an additional cost to cast this spell, exile three creature cards from your graveyard.

Flying

You may cast Skaab Ruinator from your graveyard.

{2}{U}, {T}: Each player mills three cards. Exile up to two creature cards put into graveyards this way. Create an X/X blue Zombie creature token, where X is the total power of the cards exiled this way.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Whenever combat damage is dealt to you or a planeswalker you control, if Vengeful Pharaoh is in your graveyard, destroy target attacking creature, then put Vengeful Pharaoh on top of your library.

Protection from green